Sevish (Sean Archibald) produces electronic dance music (drum & bass, jungle, house, breaks) with layers of microtonal harmonies. Recent albums include 'Harmony Hacker', 'Rhythm and Xen' and 'Horixens.' His record label 'split-notes' (launched 2010) releases microtonal music with a beat. Sevish is the main programmer for Scale Workshop web app for creating microtonal tunings. London, UK.