Biography of Sevish

Sevish is an indie musician from London (UK) who records alternative electronic music in various styles such as jungle drum & bass, house, breaks, techno, electro-jazz, ambient, trance and digital fusion. His use of advanced musical tuning — microtonality & xenharmony — gives his music a uniquely warped sound.

Sevish’s track Gleam is infamous for its stumbling 5/4 groove and trippy descending chord progression using a 22-note-per-octave scale. It’s a good example of his approachable and uptempo sound that appeals to the body while exploring abstract musical concepts.

The Sevish fandom is mostly happening on YouTube and the official Sevish Discord server.

“[Sevish]’s tunings are artificial—they don’t necessarily correspond to the way sounds vibrate in nature—but that’s their appeal. Instead of consonance or impeccable intonation, his songs feature sounds that vibrate against each other in unusual ways. It’s unnerving at first listen, but—similar to ultra-spicy hot peppers or extreme fitness—strangely addictive.”
Bandcamp Daily

“Sevish holds in one hand a mastery and interest in utilising these strange tunings, and in the other a deft ability to ingratiate them into popular and agreeable styles. The music Sevish presents is as slick as any project using standard tunings and scales, but here we find a unique sheen to everything as the inventive tones augment the tracks and engage the listener.
listencorp #001

“The artist that I think that everybody should check out if you’re into microtonal stuff, or at least want to start maybe dabbling in it without going to far off the deep end, is a producer by the name of Sevish. [His music has] the grooves, sounds and timbres of electronic music but now you also have this added layer of weird microtonalness. Really cool stuff.”
Adam Neely

“Provably 4.416 times more complete than your favorite musician”


Microtonal music and xenharmonic music

Since around 2009, Sevish’s craft has included the use of microtonality & xenharmony. Still something of a dark art — though MIDI 2.0 might encourage masses of people to follow this path in coming years — alternative tunings allow for new musical ideas and moods by expanding the pitch palette. Microtonality refers to musical intervals that are smaller than the semitone. Xenharmonic describes music that sounds remarkably different from standard Western tuning. The results can feel alien, familiar or somewhere in-between. They can sound out-of-tune, perfectly-in-tune, or somewhere in-between. A multitude of other impressions are possible. Sevish uses tuning as if it were simply another variable in the music that can be tweaked, rather than taken for granted.

While microtones are not really new — the earliest music would not have conformed to the modern standard of Western tuning — microtones are indeed new in the experiences of many people today. Even outside the West, where traditional music is microtonal, Sevish’s exploration of xenharmony still bends the ear in a fresh way. And by blending this with electronic music, Sevish avoids his work becoming too abstract or academic, but still appealing to the body.

The microtonal or Xenharmonic thing is one of the new frontiers for experrymental musicians. If you think i’m nuts just listen to Golden Hour. Sevish will wash out your ears and give you some completely new musical thrills.

The approach that Sevish has on xen music is special, and you will most probably be able to grasp the harmonies and melodies of the tuning systems. You’ll get it.
Can this even be called Music


Sevish prefers to release new music in the form of albums. As of 2024, his solo albums include Big Sway, Morphable, Formless Shadows, Bubble, Horixens, Harmony Hacker, Rhythm and Xen, Golden Hour, and Sean but not Heard (as Sean Archibald). These can be grabbed on Bandcamp, or streamed on YouTube, Spotify etc.

The British Library Sound Archive has copies of several Sevish albums.

Sevish discography on Musicbrainz

Other projects

Scale Workshop – web app to create and play microtonal tunings (programmer)
Now & Xen – podcast about microtonal music (host)
Sevish blog – blog about microtonal music, synth geekery, and electronic music tutorials
split-notes – digital record label (netlabel) for microtonal music with a beat, launched in 2010


90’s drum & bass and UK dance music in general. Video game soundtracks—especially Sega Genesis FM sounds. Minimalism and repetitive sounds. Ambient and drone music. Jazz. 80’s club music. Field recordings. 20th Century electronic music like Wendy Carlos and Raymond Scott. Gamelan. Contemporary xenharmonic music. Ancient music. Traditional music. Glitches. Listened to a lot of μ-ziq, Squarepusher, and Aphex Twin as a teenager. Prog, space, or psychedelic anything. Hip hop and beats.

Notable Works

Sevish has built a following on YouTube, where his tracks ‘Gleam’, ‘Droplet’, ‘Desert Island Rain’ and ‘Ganymede’ have been widely watched.

In 2010, Sevish’s music was included in various performances of the 60×60 project. 60×60 brings together 60 works from 60 composers, each a minute long. Submitting under the name Sean Archibald, his work See Now was used in the 2010 International Mix, Crimson Mix and Untwelve mix. It was also performed in the 60×60 Dance Mix @ Stratford Circus, where is was combined with salsa dancing from SALSAMOVES, and choreographed by Paul Harris (“the World’s only wand combat choreographer” who worked on Harry Potter and the Order of the Phoenix).

Sevish’s music has been put out by the Dutch label Dubbhism Deluxe. In 2011, Sevish, Tony Dubshot and Jacky Ligon released an album called Subversio to online music shops and popular streaming services. In this project, each of the 3 artists provide 3 tracks each. In 2014 Sevish, Tony Dubshot and Jacky Ligon followed with 23, a mini-album inspired ironically by numerology, conspiracy and ancient knowledge.


Interview with Sevish at 微分音日記 Microtonal Diary
UnTwelve interview with Sevish
An Inteview With Sevish (compiled and published by Jake Mehew)
Sevish interviewed on Now&Xen podcast (episode 22edo Room Talks)
Xen Radio episode featuring Sevish on KPISS FM
The Best Music Podcast #19 | Sevish — Producer, Composer | TET à TET with a Microtonal Mastermind
benyamind interview with Sevish


Bitwig Studio, Pure Data, Linux, various softsynths. Previously Ableton Live, Max/MSP, Xen-Arts.