What the Hell Is Keller Synth? A Guide to Tänzelcore and Basement Goblin Techno

A strange under­ground genre with roots in Ger­many involves blend­ing dun­geon synth, hard­core tech­no, and black met­al aes­thet­ics into some­thing that sounds like a rave thrown by wiz­ards. Wel­come to Keller Synth and its chaot­ic off­shoot, Tänzel­core.

You’re on YouTube look­ing for new music and you come across a video with an inter­est­ing album cov­er. You see an image of a met­al­head pos­ing stiffly in a dark for­est. The art­work looks like it has been run through a cheap pho­to­copi­er sev­er­al times: high con­trast, grainy, almost illeg­i­ble, and it seems to have been print­ed on sick­ly green flu­o­res­cent paper. Off to the side floats a smil­ing cres­cent moon, or per­haps a crude illus­tra­tion of a wiz­ard.

At first glance it resem­bles the cov­er of a low-bud­get black met­al cas­sette, down to the hand­writ­ten let­ter­ing. But when the music starts, the sound is not all what you expect­ed. You still hear the blast beats and dis­tort­ed gui­tars, but there’s seri­ous bass, and a pound­ing gab­ber rhythm dri­ves the track for­ward. Then anoth­er detail becomes obvi­ous: the sup­posed met­al­head is wear­ing a point­ed witch’s hat, a decid­ed­ly unse­ri­ous choice of attire. You scroll through the com­ments under the video and most are writ­ten in Ger­man. Many con­sist of a sin­gle word: “knallt,” the Ger­man slang equiv­a­lent for “this bangs.” You have stum­bled onto Keller Synth.

The appear­ance of Keller Synth is tied to a broad­er cul­tur­al moment in which medieval and fan­ta­sy aes­thet­ics have surged back into pop­u­lar cul­ture. Gnomes with nets are invad­ing the mall and wiz­ard imagery cir­cu­lates across inter­net meme cul­ture, while renais­sance fairs, table­top role-play­ing games, and fan­ta­sy music fes­ti­vals con­tin­ue to grow in pop­u­lar­i­ty and find unex­pect­ed new audi­ences in Europe and North Amer­i­ca.

Dun­geon Synth, an obscure off­shoot of the 1990s black met­al under­ground built around cheap key­boards, dark ambi­ent tex­tures, and medieval fan­ta­sy imagery has slow­ly emerged from its insu­lar online com­mu­ni­ties into wider vis­i­bil­i­ty. As that once-hid­den genre moves out of its fig­u­ra­tive base­ment into the also-fig­u­ra­tive light of day, the shift has pro­duced mixed reac­tions. Long­time devo­tees often lament the loss of secre­cy and mys­tique, but new lis­ten­ers have also brought exper­i­men­ta­tion. Out of this moment, a pecu­liar hybrid has tak­en shape. Among the most unusu­al micro-gen­res of the ear­ly 2020s are Keller Synth and its close­ly relat­ed off­shoot, Tänzel­core.

Both styles sit at the inter­sec­tion of elec­tron­ic dance music and the aes­thet­ics of extreme met­al. Keller Synth com­bines ele­ments of tech­no, gab­ber, and oth­er hard elec­tron­ic styles with the imagery and atmos­phere of dun­geon synth and black met­al. The music often fea­tures pound­ing, high-tem­po beats lay­ered with crude syn­the­siz­er melodies that evoke medieval fan­ta­sy sound­tracks. Visu­al pre­sen­ta­tion plays a large role in the genre’s iden­ti­ty: art­work typ­i­cal­ly imi­tates the lo-fi pho­to­copied style of 1990s under­ground tape cul­ture, filled with wiz­ards, forests, cas­tles, gob­lins, or delib­er­ate­ly ama­teur­ish fan­ta­sy imagery.

Tänzel­core is close­ly relat­ed and some­times con­fused with Keller Synth, though the two labels are used some­what inter­change­ably depend­ing on the artist and com­mu­ni­ty. The dis­tinc­tion is most­ly cul­tur­al rather than strict­ly musi­cal. Tänzel­core tends to empha­size a dance-floor ori­en­ta­tion and often leans fur­ther toward hard tech­no or gab­ber struc­tures, while Keller Synth is more close­ly tied to the aes­thet­ics and tra­di­tions of dun­geon synth and black met­al par­o­dy. Both styles fre­quent­ly embrace irony and exag­ger­at­ed fan­ta­sy tropes, blend­ing dark imagery with inten­tion­al­ly humor­ous or absurd pre­sen­ta­tion.

The scenes sur­round­ing these gen­res are heav­i­ly inter­net-dri­ven. Ger­many was orig­i­nal­ly the cen­tral hub of activ­i­ty, with many artists, lis­ten­ers, and com­men­ta­tors com­mu­ni­cat­ing pri­mar­i­ly in Ger­man. The style has since devel­oped ded­i­cat­ed fol­low­ings in oth­er parts of Europe and unex­pect­ed­ly strong audi­ences in coun­tries such as Rus­sia, Brazil, and Indone­sia, where local com­mu­ni­ties adopt the aes­thet­ic and con­tribute to the scene, often weav­ing in their take on the fan­ta­sy aes­thet­ic, inspired by their own encoun­ters with local folk­lore.

The ter­mi­nol­o­gy itself reflects the genre’s char­ac­ter. In Ger­man, “Keller” means cel­lar or base­ment, an obvi­ous ref­er­ence both to the base­ment ori­gins of under­ground music scenes and to the lo-fi, DIY spir­it asso­ci­at­ed with dun­geon synth. “Tänzel” means to prance, while “Tanz” means dance, giv­ing the term Tänzel­core a slight­ly whim­si­cal con­no­ta­tion, some­thing clos­er to “pranc­ing dance music” than the aggres­sive seri­ous­ness sug­gest­ed by many elec­tron­ic sub­gen­res. Even in its name, the genre sug­gests a space between in-joke par­o­dy and under­ground dance­floor authen­tic­i­ty.

There is still rel­a­tive­ly lit­tle writ­ten about Keller Synth in a for­mal sense. Most ref­er­ences online describe how it sounds rather than what it rep­re­sents cul­tur­al­ly or his­tor­i­cal­ly. The scene remains large­ly under­ground and is held togeth­er pri­mar­i­ly through inter­net plat­forms, where artists dis­trib­ute tracks, art­work, and short-form videos that cir­cu­late through niche com­mu­ni­ties.

The genre’s roots are fre­quent­ly linked to the black met­al scene of Germany’s Saar­land region in the coun­try’s south­west. Dur­ing the late 1990s and ear­ly 2000s, the area expe­ri­enced sig­nif­i­cant eco­nom­ic decline fol­low­ing the clo­sure of its his­toric coal mines and steel mills. The col­lapse of these indus­tries left many com­mu­ni­ties fac­ing unem­ploy­ment and iso­la­tion, par­tic­u­lar­ly in small­er towns. These con­di­tions shaped the local under­ground music envi­ron­ment. With lim­it­ed finan­cial resources and lit­tle access to pro­fes­sion­al record­ing spaces, musi­cians often worked from the base­ments, Keller, of inex­pen­sive hous­ing. Impro­vised home stu­dios became the prac­ti­cal solu­tion for record­ing, and the base­ment set­ting even­tu­al­ly became embed­ded in the iden­ti­ty of the scene.

While the Saar­land scene pro­duced many notable under­ground black met­al bands, this con­text also con­tributed to the birth of Keller Synth and its delib­er­ate­ly crude pro­duc­tion style. Instead of pol­ished stu­dio record­ings, many tracks rely on inex­pen­sive syn­the­siz­ers, sim­ple drum machines, and basic dig­i­tal soft­ware. The result is a sound that com­bines the pound­ing rhyth­mic struc­tures of hard­core tech­no or gab­ber with the atmos­pher­ic sen­si­bil­i­ties of dun­geon synth. Dun­geon synth itself emerged in the ear­ly 1990s as an off­shoot of black met­al, char­ac­ter­ized by dark ambi­ent tex­tures, medieval themes, and min­i­mal­ist key­board com­po­si­tions. Keller Synth adopts many of these aes­thet­ic ref­er­ences but reframes them with­in a faster, dance-ori­ent­ed elec­tron­ic struc­ture.

Musi­cal­ly, Keller Synth diverges from tra­di­tion­al Dun­geon Synth through its empha­sis on per­cus­sion, speed, and a more aggres­sive son­ic palette. While dun­geon synth typ­i­cal­ly favors slow, atmos­pher­ic com­po­si­tions built from lay­ered key­board tex­tures, Keller Synth intro­duces dri­ving rhythms and a stronger con­nec­tion to elec­tron­ic dance music. The instru­men­tal back­bone often con­sists of inex­pen­sive MIDI syn­the­siz­ers pro­grammed to imi­tate medieval instru­ments such as flutes, organs, or harp­si­chords. These melodies are fre­quent­ly played at unusu­al­ly fast tem­pos, giv­ing the music a fran­tic, almost car­toon­ish ener­gy.

These medieval-style melodies are often com­bined with clas­sic rave-era syn­the­siz­er sounds. One fre­quent­ly ref­er­enced exam­ple is the buzzing “Hoover” tone asso­ci­at­ed with ear­ly 1990s hard­core tech­no, a sound famous­ly pro­duced by syn­the­siz­ers such as the Roland Alpha Juno. Thus, a dense, noisy mix results from the lay­er­ing of dis­tort­ed basslines, harsh dig­i­tal leads, and pound­ing drum machines.

Vocals are typ­i­cal­ly min­i­mal and heav­i­ly processed. When present, they often appear as high-pitched, pitch-shift­ed “gob­lin” voic­es or dis­tort­ed shrieks buried beneath the instru­men­ta­tion, some­times bor­row­ing from the vocal style of its black met­al pre­de­ces­sors. The over­all pro­duc­tion aes­thet­ic delib­er­ate­ly imi­tates the sound of music record­ed on inex­pen­sive equip­ment, often evok­ing the degrad­ed audio qual­i­ty of under­ground cas­sette releas­es pro­duced in base­ment stu­dios.

Mean­while, Tänzel­core tracks often revolve around dis­tort­ed kick drums derived from hard­core tech­no, gab­ber, and acid house tra­di­tions. Many tracks employ clas­sic rave per­cus­sion pat­terns, includ­ing the famous “amen break,” along­side relent­less four-on-the-floor rhythms. These ele­ments are fre­quent­ly pushed to extreme lev­els of clip­ping and dis­tor­tion using ana­log mix­er emu­la­tors, sat­u­ra­tion plu­g­ins, or even hard­ware dis­tor­tion ped­als. Drum hits crack­le and over­load while syn­the­siz­er melodies spi­ral across the top of the mix.

Although the musi­cal dis­tinc­tion between Keller Synth and Tänzel­core can be sub­tle, Tänzel­core gen­er­al­ly places greater empha­sis on the dance­floor. Keller Synth main­tains stronger ties to dun­geon synth atmos­pheres and black met­al par­o­dy, while Tänzel­core fore­grounds the rhyth­mic dri­ve of tech­no and hard­core. In prac­tice, how­ev­er, the two terms are often used inter­change­ably by lis­ten­ers and artists alike.

Sev­er­al artists are com­mon­ly cit­ed as pio­neers with­in the scene. Keller Synth itself is fre­quent­ly asso­ci­at­ed with ear­ly projects con­nect­ed to B.S.O.D. as well as Sigfrid (also known through the Fried­hof project). Tänzel­core, mean­while, places a much heav­ier empha­sis on elec­tron­ic dance music struc­tures. As men­tioned ear­li­er, the name of the genre reflects its shift away from the atmos­pher­ic side of black met­al and toward rhyth­mic inten­si­ty., who empha­sized the genre’s elec­tron­ic dance music foun­da­tions while retain­ing its dis­tinc­tive visu­al iden­ti­ty.

The foun­da­tion­al sound and visu­al aes­thet­ic asso­ci­at­ed with Keller Synth are often traced back to the work of Ger­man musi­cian Andreas “B.S.o.D.” Bet­tinger. Born on August 1, 1980, Bet­tinger began his best-known project Grausamkeit when he was only four­teen years old. Through the 1990s and ear­ly 2000s he became an impor­tant fig­ure in the Saar­land black met­al under­ground, a small but influ­en­tial region­al scene at the time.

In addi­tion to his musi­cal out­put, how­ev­er, his per­son­al life has been marked by repeat­ed legal prob­lems. Records indi­cate mul­ti­ple peri­ods of incar­cer­a­tion, includ­ing var­i­ous stretch­es from 2003 to 2015, and again from mid- or late 2016 until March 20, 2019. Dur­ing one peri­od of impris­on­ment he report­ed­ly per­formed in a cov­er band ded­i­cat­ed to the Ger­man rock group Böhse Onkelz, as well as a band asso­ci­at­ed with the Hells Angels motor­cy­cle club known sim­ply as 81.

By June 2013, Bet­tinger report­ed­ly had accu­mu­lat­ed a stag­ger­ing 147 offens­es on his police record. These includ­ed one con­vic­tion relat­ed to vio­lence, one relat­ed to incite­ment of hatred, and the remain­ing 145 con­nect­ed pri­mar­i­ly to drug-relat­ed charges. His pub­lic state­ments and artis­tic out­put have some­times open­ly ref­er­enced drug cul­ture, and he has been known to advo­cate hero­in use. These aspects of his biog­ra­phy have con­tributed to his noto­ri­ety with­in under­ground music cir­cles, where he remains both influ­en­tial and con­tro­ver­sial.

Despite his crim­i­nal record, across the decades Bet­tinger has oper­at­ed an unusu­al­ly large num­ber of musi­cal projects and col­lab­o­ra­tions, many of them extreme­ly obscure. The num­ber of asso­ci­at­ed bands and alias­es has grown so large that com­pil­ing a com­plete list has proven dif­fi­cult even for ded­i­cat­ed fans. His work has also involved col­lab­o­ra­tion with his wife San­dra Bet­tinger, who record­ed under the name Melse. She died in 2013 under cir­cum­stances that were nev­er ful­ly clar­i­fied, although some inter­net com­mu­ni­ties allege it was due to an over­dose.

Bet­tinger’s record­ings estab­lished an ear­ly tem­plate that fused the atmos­phere of dun­geon synth with the abra­sive elec­tron­ics and raw pro­duc­tion asso­ci­at­ed with under­ground black met­al. Rather than rely­ing on gui­tars, many of these record­ings used cheap drum machines and syn­the­siz­ers to approx­i­mate the struc­ture of black met­al while retain­ing the bleak atmos­phere of base­ment-record­ed music. This stripped-down style estab­lished what many lat­er artists would take and use in their own projects both in the worlds of Black Met­al and Dun­geon Synth as well as Keller Synth.

While Bettinger’s work estab­lished much of the son­ic ground­work, the con­tem­po­rary Keller Synth and Tänzel­core scene is also strong­ly asso­ci­at­ed with a younger fig­ure: Ger­man musi­cian Justin Reit­er, known under the alias Sigfrid. As a genre, Tänzel­core places a much heav­ier empha­sis on elec­tron­ic dance music struc­tures while retain­ing its dis­tinc­tive visu­al iden­ti­ty. The term was coined by the artist Sigfrid, gen­er­al­ly seen as the founder of the genre, and became estab­lished around 2019 with the release of his album Mosel­frankian Tänzel­core Mad­ness, under the name Bergënot.

Born on April 12, 2002, Reit­er began pro­duc­ing music in the mid-2010s. Accord­ing to his online pro­files and project his­to­ries, he had start­ed exper­i­ment­ing with elec­tron­ic pro­duc­tion by around 2015. One of his ear­li­est projects was PilzKrieger, an extra­tone-ori­ent­ed exper­i­ment that pro­duced only a small num­ber of releas­es.

Reiter’s involve­ment with the Keller Synth aes­thet­ic became clear­er a few years lat­er. Around 2018 he began releas­ing mate­r­i­al under the name Groll­fried, a project often cit­ed as an ear­ly exam­ple of the style’s raw key­board-dri­ven approach. The music resem­bled a stripped-down inter­pre­ta­tion of black met­al per­formed entire­ly on syn­the­siz­ers, fre­quent­ly sup­port­ed by extreme­ly lo-fi drum pro­gram­ming. Some lis­ten­ers have described the sound as almost noise-like in its rough­ness. One com­ment under the YouTube upload for the the album Moos und Efeu famous­ly sum­ma­rized the pro­duc­tion qual­i­ty with the remark: “Sounds like it was record­ed through an evil sock. I like it.”

Around the same time, Reit­er also devel­oped the project Fried­hof, which moved toward a slight­ly slow­er and more atmos­pher­ic style. Fried­hof tracks often con­tin­ue Reit­er’s rein­ter­pre­ta­tion of black met­al struc­ture using MIDI instru­men­ta­tion rather than gui­tars, while still retain­ing the harsh tonal palette of Keller Synth. By 2019 he had launched anoth­er project, Bergënot, which became cen­tral to the devel­op­ment of Tänzel­core.

The Bergënot album Mosel­frankian Tänzel­core Mad­ness is often cit­ed as a defin­ing release for the sub­genre. Its cov­er art­work fea­tures a crude draw­ing of a long-nosed fig­ure hold­ing a sev­ered head, ren­dered in a delib­er­ate­ly play­ful car­toon style. Musi­cal­ly the record leans heav­i­ly toward dark­ened hard­core tech­no struc­tures, with sec­tions that accel­er­ate into full gab­ber-style tem­pos, a new inno­va­tion that her­ald­ed the entry of a new genre onto the scene. In the video accom­pa­ny­ing the Bergënot track “Der Vam­pir,” the icon­ic image of Count Orlok from the 1922 film Nos­fer­atu appears wear­ing an Amani­ta mush­room cap, rein­forc­ing the genre’s mix­ture of hor­ror imagery and absurd humor. The music itself com­bines omi­nous atmos­pher­ic tex­tures, resem­bling a windy grave­yard sound­track, with basslines designed explic­it­ly to dri­ve dance rhythms.

Beyond these core projects, the Keller Synth and Tänzel­core ecosys­tem has expand­ed into a wide range of inter­na­tion­al acts. One of the most wide­ly rec­og­nized releas­es is Tene­bris’ Bed­room Par­ty, record­ed in Indone­sia and described by its cre­ator as hav­ing been pro­duced “late August to Sep­tem­ber MMXXII at The Witch’s Bed­room.” The album stands out for incor­po­rat­ing clear­er gui­tar and drum record­ings than many Keller Synth projects, though these ele­ments remain lay­ered with the genre’s trade­mark warped MIDI-style organ sounds. The cov­er art­work fea­tures a wiz­ard in a point­ed hat and curled shoes per­form­ing a pose rem­i­nis­cent of the dance stance asso­ci­at­ed with the punk band Cir­cle Jerks. A typ­i­cal com­ment left by lis­ten­ers cap­tures the play­ful tone sur­round­ing the music: “My body is shrink­ing, my shoes start­ed point­ing up and my beard is turn­ing white, I won­der why.”

In Brazil, the artist Demen­tar from Tracu­a­teua has pro­duced music that seems to echo the lo-fi elec­tron­ic tex­tures of acts such as Crys­tal Cas­tles with black met­al influ­ences, result­ing in a stripped-down, dis­tort­ed hybrid that pre­serves Keller Synth’s raw atmos­phere while empha­siz­ing elec­tron­ic rhythms. Oth­er pro­duc­ers have pushed the aes­thet­ic fur­ther into rave ter­ri­to­ry. Hex­en­meis­ter from Donet­sk, for exam­ple, cre­ates tracks that evoke the sen­sa­tion of a dis­tant rave tak­ing place inside an aban­doned cas­tle. A visu­al­iz­er on YouTube for Hex­en­meis­ter’s album, Pilzritu­al der Hex­en, incor­po­rates footage from the 1967 Sovi­et-era hor­ror film Viy, some­times described as the Sovi­et Union’s only major hor­ror film.

The geo­graph­ic spread of the scene extends even fur­ther. War­lock Corpse, a Russ­ian project based in Kaza­khstan, pro­duces music that ranges from lo-fi met­al record­ings to slow, atmos­pher­ic sound­tracks rem­i­nis­cent of 1990s role-play­ing games. Anoth­er project by the same artist, Cul­tur­ist, leans much more heav­i­ly toward rave-ori­ent­ed sounds, par­tic­u­lar­ly in releas­es such as Return to the Dun­geon Rave.

Col­lab­o­ra­tive projects also appear fre­quent­ly. Khtoni­nen Luo­mus, the split release between Fried­hofs­be­wohn­er and Hir­ven Veren­im­i­jä fea­tures the famil­iar cheap key­board tex­tures and down-pitched MIDI organs typ­i­cal of the genre while draw­ing heav­i­ly on Finnish folk­lore. The album was issued through the Russ­ian-based label UralPsy­che­del­i­cRawTer­ror, which described the music in char­ac­ter­is­ti­cal­ly sur­re­al terms: “From the depths of the Ural Moun­tains, from the pine forests of the Earth’s Belt, lost in time and space, this release has been brought to the atten­tion of the Shu­dras and Vaishyas by your gra­cious hosts… Forged by enlight­ened fel­low gnomes, it presents a half-hour of raw Keller Synth in the finest tra­di­tions of the genre. Two of the twelve com­po­si­tions will pierce your dim-wit­ted heads with rhyth­mic waves of good old Tänzel­core. Thir­ty min­utes of melan­choly and authen­tic Ural chthonic­i­ty.”

Else­where, the duo Cries of Agony from Den­ton, Texas has devel­oped a vari­a­tion that leans more heav­i­ly into the despair and emo­tion­al inten­si­ty asso­ci­at­ed with tra­di­tion­al black met­al. Their record­ings rein­ter­pret that bleak tone through a dance-ori­ent­ed frame­work, blend­ing atmos­pher­ic dark­ness with elec­tron­ic rhythms. They lat­er col­lab­o­rat­ed with Cul­tur­ist and DJ 32 on the com­pi­la­tion-style release Dark Dun­geon Rave!, illus­trat­ing the increas­ing­ly inter­na­tion­al and inter­con­nect­ed char­ac­ter of the Keller Synth and Tänzel­core scenes.

Despite remain­ing large­ly under­ground, the net­work of artists con­tin­ues to expand across con­ti­nents, unit­ed by a shared fas­ci­na­tion with dis­tort­ed medieval imagery, base­ment pro­duc­tion tech­niques, and the unlike­ly com­bi­na­tion of black met­al atmos­phere with rave-era elec­tron­ics.

Typog­ra­phy and graph­ic design play an unusu­al­ly impor­tant role in defin­ing the genre’s iden­ti­ty and help­ing it spread across the inter­net. Keller Synth art­work delib­er­ate­ly exag­ger­ates and par­o­dies the visu­al lan­guage of tra­di­tion­al black met­al. Band logos are often inten­tion­al­ly crude, appear­ing as though they were drawn in MS Paint or sketched hasti­ly with jagged lines. Extreme illeg­i­bil­i­ty is treat­ed as a styl­is­tic virtue. Let­ters fre­quent­ly dis­solve into chaot­ic tan­gles of linework in which sym­bols as var­ied as invert­ed cross­es, triske­lions, swastikas, cres­cent moons, and wiz­ard hats, blend direct­ly into the let­ter­ing. Black met­al and dun­geon synth had already embraced illeg­i­ble logos as a mark­er of under­ground authen­tic­i­ty, but Keller Synth push­es the approach into a more humor­ous and whim­si­cal direc­tion as a kind of black­ened whim­sig­oth.

The broad­er visu­al style could be described as a form of “deep-fried medieval­ism.” Album cov­ers and pro­mo­tion­al images are inten­tion­al­ly dis­tort­ed through aggres­sive dig­i­tal fil­ter­ing and col­or manip­u­la­tion. A typ­i­cal palette com­bines neon green or pink with black, pro­duc­ing the gar­ish, high-con­trast aes­thet­ic com­mon across many Keller Synth videos and thumb­nails. Clas­si­cal wood­cut illus­tra­tions of medieval fig­ures, wiz­ards, monks, knights, or myth­i­cal crea­tures, are fre­quent­ly recy­cled and dig­i­tal­ly altered. Unlike the somber tone of tra­di­tion­al dun­geon synth, these images are often pre­sent­ed with an absur­dist twist.

One of the most rec­og­niz­able recur­ring motifs is what is called the “Pranc­ing Wiz­ard.” These fig­ures are usu­al­ly adapt­ed from his­tor­i­cal wood­cut illus­tra­tions and edit­ed to appear as if they are danc­ing, rav­ing, or strik­ing exag­ger­at­ed pos­es. A par­tic­u­lar­ly com­mon ges­ture is the “nose thumb,” a tra­di­tion­al sign of mock­ery in which the thumb is placed against the nose while the fin­gers wig­gle out­ward. The ges­ture has deep roots in Euro­pean folk humor and appears in sto­ries about trick­ster fig­ures such as Till Eulen­spiegel, a mis­chie­vous char­ac­ter from Ger­man folk­lore known for humil­i­at­ing author­i­ty fig­ures through pranks. In Keller Synth art­work, the ges­ture sig­nals the genre’s play­ful, irrev­er­ent atti­tude toward its own influ­ences.

The nose-thumb ges­ture also appears beyond album art­work in the behav­ior of fans and per­form­ers them­selves. Keller Synth imagery fre­quent­ly shows witch­es or wiz­ards mak­ing the ges­ture while pranc­ing or danc­ing. In online Keller Synth com­mu­ni­ties, the emo­ji com­bi­na­tion “🤥🤚🤚” occa­sion­al­ly appears as a short­hand ref­er­ence to the pose. The ges­ture is also com­mon­ly used by chil­dren in Ger­man-speak­ing coun­tries as a way to taunt or ridicule oth­ers, which like­ly influ­enced its inclu­sion as a cen­tral hall­mark of the scene dur­ing its incep­tion in Ger­many.

In addi­tion to wiz­ards, gob­lins and ghosts appear fre­quent­ly in album art, but one of the more unusu­al mas­cots with­in the com­mu­ni­ty is the Blem­myae (Latin: Blem­myae), a leg­endary race of head­less men whose faces are locat­ed on their chests, a myth that orig­i­nat­ed in Greek antiq­ui­ty but gained a spe­cif­ic focus in Medieval imagery. These crea­tures were often men­tioned in trav­el lit­er­a­ture and were believed by ear­ly writ­ers to inhab­it dis­tant regions of Africa. With­in the Keller Synth scene, the fig­ure gained recog­ni­tion after appear­ing on one of the ear­li­est releas­es asso­ci­at­ed with the style, a split album by artists Corneus and Groll­fried, and remains an unusu­al but mem­o­rable exam­ple of the genre’s sur­re­al iconog­ra­phy.

Addi­tion­al visu­al ele­ments appear repeat­ed­ly across Keller Synth art­work. Amani­ta mus­caria mush­rooms, rec­og­niz­able by their red caps with white spots, are com­mon motifs, ref­er­enc­ing both Euro­pean folk­lore and the prac­tice of mush­room for­ag­ing. At the same time, the broad­er aes­thet­ic often alludes to hard­er drug cul­ture, specif­i­cal­ly exper­i­ments with psy­che­delics. Dank base­ments, aban­doned build­ings, and bleak rur­al land­scapes appear fre­quent­ly, some­times tint­ed with lurid fil­ters that give the envi­ron­ment an unnat­ur­al, tox­ic appear­ance. These images echo themes present in ear­li­er exper­i­men­tal elec­tron­ic projects by one of the scene’s founders, Andreas Bet­tinger, whose side project Hero­in Macht Glück­lich (Hero­in Makes Hap­py) open­ly explored the inter­sec­tion of under­ground music and drug cul­ture.

Anoth­er recur­ring sym­bol is the triske­lion, a three-legged spi­ral motif some­times depict­ed as a styl­ized sun face, tra­di­tion­al­ly found in ancient Welsh and Sicil­ian cul­tures. In Keller Synth imagery it often appears in bright lime green, rein­forc­ing the genre’s dis­tinc­tive col­or palette.

This visu­al meme has crossed over into video cul­ture as well. On plat­forms such as Tik­Tok, par­tic­i­pants some­times record them­selves imi­tat­ing Keller Synth imagery: pranc­ing through forests, wear­ing point­ed witch hats, or occa­sion­al­ly dressed in fleck­tarn, the dis­tinc­tive cam­ou­flage pat­tern used by the Ger­man mil­i­tary. The Triske­lion is often fea­tured promi­nent­ly in these videos as an unof­fi­cial sym­bol of the scene. The cohe­sive aes­thet­ic of these videos helped trans­form Keller Synth from a niche musi­cal exper­i­ment into a rec­og­niz­able inter­net aes­thet­ic dur­ing the ear­ly 2020s.

In dig­i­tal spaces, the visu­al style extends even into text for­mat­ting. Typog­ra­phy across album art and playlists typ­i­cal­ly com­bines illeg­i­ble black met­al logos with crude, pix­e­lat­ed medieval-style fonts, empha­siz­ing the mix­ture of archa­ic fan­ta­sy imagery and delib­er­ate­ly prim­i­tive dig­i­tal design. Track list­ings, playlists, and online titles fre­quent­ly incor­po­rate Uni­code sym­bols, ASCII art, and styl­ized let­ter­ing. Frak­tur-style text gen­er­a­tors, designed to imi­tate medieval black­let­ter typog­ra­phy. are wide­ly used to pro­duce elab­o­rate dec­o­ra­tive titles. As a result, playlist names often appear as dense clus­ters of sym­bols and styl­ized fonts, such as a Spo­ti­fy playlist by one of the scene’s founders, titled “𖤐⛈𓉢𝔗𝑎̈𝑛𝑧𝑒𝑙𝑐𝑜𝑟𝑒𓉢⛈𖤐🂠.”

The intend­ed audi­ence for this music is dif­fi­cult to define in con­ven­tion­al genre terms. The imagery and tone of the scene often sug­gest a hybrid cul­tur­al arche­type, some­thing like a met­al­head, medieval jester, wiz­ard, and trick­ster gob­lin com­bined into a sin­gle per­sona. This play­ful atti­tude is reflect­ed not only in the art­work but also in the per­for­mance style and online behav­ior of its par­tic­i­pants.

Across both Keller Synth and Tänzel­core, the visu­al pre­sen­ta­tion remains cen­tral. The aes­thet­ic is some­times jok­ing­ly described with­in the com­mu­ni­ty as “shit­ty medieval­ism.” The most rec­og­niz­able palette com­bines neon green or bright pur­ple with deep black back­grounds, cre­at­ing visu­als that resem­ble “deep-fried” ear­ly com­put­er graph­ics or heav­i­ly com­pressed bitmap images.

For many years the style remained extreme­ly niche. Releas­es cir­cu­lat­ed pri­mar­i­ly through under­ground music plat­forms such as Band­camp, while dis­cus­sion and cat­a­loging took place on sites like RateY­our­Mu­sic. The broad­er inter­net only began to notice the aes­thet­ic in the ear­ly 2020s. Dur­ing this peri­od, short clips fea­tur­ing Keller Synth tracks, often paired with loop­ing images of danc­ing wiz­ards or dis­tort­ed medieval illus­tra­tions, began cir­cu­lat­ing wide­ly on Tik­Tok.

The strik­ing visu­al lan­guage made the genre par­tic­u­lar­ly com­pat­i­ble with meme cul­ture. Users began cre­at­ing their own short videos imi­tat­ing the imagery: pranc­ing through forests in wiz­ard hats, edit­ing medieval wood­cuts to appear as if they were danc­ing, or apply­ing heavy green fil­ters to obscure fan­ta­sy illus­tra­tions. Some observers com­pared the aes­thet­ic to that of oth­er inter­net artists such as Yabu­jin, whose visu­al pre­sen­ta­tion also blends reli­gious and Euro­pean-style imagery with dis­tort­ed dig­i­tal graph­ics. Nat­u­ral­ly, the fan­bas­es of both groups often over­lap.

As the videos spread, the genre expe­ri­enced an influx of new par­tic­i­pants. A wave of younger pro­duc­ers began cre­at­ing projects that adopt­ed the Keller Synth visu­al lan­guage while push­ing the music fur­ther toward dis­tort­ed elec­tron­ic dance music. Acts such as the afore­men­tioned artists Tene­bris and Hex­en­meis­ter emerged from this envi­ron­ment, expand­ing the scene while con­tin­u­ing its mix­ture of medieval fan­ta­sy imagery, black met­al par­o­dy, and aggres­sive rave music.

As Keller Synth and Tänzel­core spread beyond their small under­ground cir­cles, they have also attract­ed crit­i­cism. Some lis­ten­ers with­in the estab­lished dun­geon synth com­mu­ni­ty argue that the genre dilutes a style that took decades to devel­op. Oth­ers object to the scene’s casu­al approach to sym­bol­ism, its use of provoca­tive imagery for shock val­ue, and what crit­ics inter­pret as a dubi­ous endorse­ment or cel­e­bra­tion, iron­ic or oth­er­wise, of heavy drug use with­in its aes­thet­ic.

The dis­course inten­si­fied as Tänzel­core began gain­ing wider recog­ni­tion in ear­ly to mid-2023. Much of the crit­i­cism has focused not only on the music but also on the behav­ior of its fan­base. Online dis­cus­sions often por­tray seg­ments of the com­mu­ni­ty as irrev­er­ent or polit­i­cal­ly con­fronta­tion­al, con­tribut­ing to ongo­ing dis­putes across forums and social media plat­forms. At the same time, many met­al lis­ten­ers reject the clas­si­fi­ca­tion of the genre as met­al alto­geth­er. Although some fans of Keller Synth con­tin­ue to describe the music in met­al terms due to its aes­thet­ic ties to black met­al, detrac­tors argue that the sound is fun­da­men­tal­ly elec­tron­ic and there­fore falls out­side the bound­aries of the genre.

The style is fre­quent­ly dis­missed by some musi­cians with­in tra­di­tion­al dun­geon synth and black met­al cir­cles as an unse­ri­ous off­shoot lack­ing the atmos­phere and com­po­si­tion­al depth asso­ci­at­ed with ear­li­er releas­es. Crit­ics often argue that Keller Synth relies too heav­i­ly on nov­el­ty such as aggres­sive dance beats, crude syn­the­siz­er melodies, and inten­tion­al­ly degrad­ed pro­duc­tion, rather than care­ful song­writ­ing.

The influx of younger audi­ences from plat­forms such as Tik­Tok and from adja­cent online music scenes, includ­ing Sound­Cloud rap com­mu­ni­ties, has inten­si­fied these ten­sions. To some long-time par­tic­i­pants in the under­ground, the genre appears designed pri­mar­i­ly for inter­net trend cycles rather than sus­tained musi­cal explo­ration. This gen­er­a­tional con­flict is vis­i­ble in online argu­ments sur­round­ing the genre. In one Red­dit dis­cus­sion, a com­menter using the name fan­griev­er wrote: “You legit did­n’t even know BM was a thing up until 2021 I bet. Every­thing you know and find is off of Tik­Tok. You changed your whole per­son­al­i­ty based on a genre of music you knew for a cou­ple months, you’re quite the def­i­n­i­tion of a sheep.”

Anoth­er user, tai­ilir­ra, empha­sized the his­tor­i­cal con­ti­nu­ity of the scene: “And that’s the exact prob­lem: This scene isn’t just about the music, but it’s also in rela­tion to a cul­ture that has been estab­lished for like three decades. New­bies think they can just come in and rewrite the books, but nah guys. Not going to hap­pen, no mat­ter how much you spam buzz­words such as gate­keep­er and elit­ist.” Oth­ers in the same thread respond­ed by ques­tion­ing the seri­ous­ness of these argu­ments alto­geth­er. One com­menter, direct-eff7709, replied blunt­ly: “What the fuck is this a reli­gion? Jesus Christ you peo­ple need help; it’s music. Go out­side.”

Sup­port­ers of Keller Synth and Tänzel­core accuse peo­ple in the com­mu­ni­ties crit­i­ciz­ing them of elit­ism offer and a dif­fer­ent inter­pre­ta­tion of the genre’s pur­pose. Many artists argue that the music was nev­er intend­ed to func­tion as a strict sub­genre of black met­al. Instead, they frame it as an elec­tron­ic fusion in which black met­al aes­thet­ics serve pri­mar­i­ly as one ingre­di­ent among many. From this per­spec­tive, the genre’s most impor­tant musi­cal influ­ences come not from met­al but from rave music tra­di­tions such as hard­core tech­no, gab­ber, and acid house.

This lin­eage is evi­dent in the work of sev­er­al cen­tral fig­ures with­in the scene. Sigfrid, for exam­ple, has exper­i­ment­ed with mul­ti­ple side projects that explic­it­ly incor­po­rate dance music styles. Under the alias Car­los Esmer­al­da Jalapeño, he has explored the fast melod­ic pat­terns asso­ci­at­ed with Span­ish mák­i­na, a style of high-tem­po elec­tron­ic dance music that emerged in Spain dur­ing the 1990s. These influ­ences rein­force the idea that Tänzelcore’s rhyth­mic struc­ture is clos­er to rave cul­ture than to con­ven­tion­al met­al com­po­si­tion.

So what does the future of the scene look like? Recent­ly, yet anoth­er off­shoot of dun­geon synth has begun to emerge. Like Tänzel­core, it draws heav­i­ly on fan­ta­sy imagery and dance-ori­ent­ed rhythms, but it aban­dons the delib­er­ate­ly lo-fi and degrad­ed pro­duc­tion asso­ci­at­ed with Keller Synth in favor of a clear­er, more pol­ished, and open­ly dance­able sound. The style, referred to as Dis­co Dun­geon Synth, has been large­ly pio­neered in the recent work of the Moscow-based artist Met­so­gen, and it is quick­ly carv­ing out its own niche with­in the broad­er dun­geon synth ecosys­tem. What met­al influ­ences there are more close­ly resem­ble that of clas­sic heavy and pow­er met­al while Met­so­gen’s track Free­dom of Puri­ty is a take on Alice Dee­jay’s 90s Euro­dance hit Bet­ter off Alone.

Whether Dis­co Dun­geon Synth rep­re­sents a reac­tion against the dark, murky aes­thet­ics of Keller Synth or sim­ply a com­ple­men­tary evo­lu­tion remains unclear. Its visu­al iden­ti­ty moves in the oppo­site direc­tion: brighter, glossier, and more sharply defined. Art­work fre­quent­ly fea­tures gleam­ing suits of knight­ly armor, radi­ant lens flares, and hero­ic fan­ta­sy imagery. The look recalls the air­brushed com­mer­cial illus­tra­tion styles of the 1980s, com­bined with motifs drawn from Arthuri­an leg­end and clas­sic high-fan­ta­sy imagery.

For many par­tic­i­pants, the ethos of the genre revolves less around provo­ca­tion than around play­ful­ness. The exag­ger­at­ed imagery of danc­ing wiz­ards, gob­lins, and medieval trick­sters reflects a broad­er attempt to inject humor and absur­di­ty into scenes that his­tor­i­cal­ly cul­ti­vat­ed extreme seri­ous­ness. The result­ing tone, part par­o­dy, part cel­e­bra­tion, has attract­ed lis­ten­ers who enjoy the mix­ture of dark aes­thet­ics with a delib­er­ate­ly mis­chie­vous sense of fun.

Keller Synth and Tänzel­core occu­py an unusu­al posi­tion with­in con­tem­po­rary under­ground music. Part elec­tron­ic dance genre, part black met­al par­o­dy, and part inter­net meme cul­ture, the scene con­tin­ues to evolve through a decen­tral­ized net­work of artists and lis­ten­ers scat­tered across the world. Whether regard­ed as an irrev­er­ent joke, a legit­i­mate musi­cal muta­tion, or some­thing in between, the move­ment reflects the strange ways in which inter­net cul­ture con­tin­ues to reshape even the most insu­lar cor­ners of under­ground music.

Despite the con­tro­ver­sies sur­round­ing the genre, many par­tic­i­pants in the scene are less con­cerned with defend­ing the genre than with pure expres­sion. For artists, the goal is to weave visions of strange alter­nate worlds through dis­tort­ed sounds and fan­ta­sy imagery; for lis­ten­ers, it is sim­ply to step inside those worlds and get lost for a while, and just dance. In that sense, the end­less argu­ments about genre bound­aries or authen­tic­i­ty may ulti­mate­ly miss the point. Anoth­er line from the descrip­tion for the album Khtoni­nen Luo­mus also offers one more piece of wis­dom, pos­si­bly enough to set­tle the mat­ter: “Now, enough words, my fol­low­ers. In our crap­py age, it’s enough to just press a but­ton to lis­ten to some­thing, so hur­ry up and do it.”

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