Sevish

Sevish (Sean Archibald) is a pivotal figure in the 21st-century xenharmonic music movement, bridging the gap between academic microtonality and contemporary electronic dance music. Based in London, Archibald's work is defined by its rejection of the 12-tone equal temperament (12-TET) system that dominates Western music.

Instead, he utilizes alternative systems like 22-EDO, 15-EDO, and the Bohlen-Pierce scale. His career arc began with early internet releases influenced by video game soundtracks and the experimentalism of Aphex Twin, eventually leading to the founding of his label, Split-Notes, which serves as a hub for beat-driven microtonal music. Beyond his compositions, he is a significant technical contributor to the scene as a developer of Scale Workshop, a tool that democratizes the creation of custom tunings. Critical consensus positions him as a rare artist who successfully translates complex mathematical music theory into a listenable, vibrant IDM context. His influence is particularly strong among a new generation of 'bedroom producers' looking to move beyond standard harmonic constraints.