Tetrad is the dubstep and bass music project of L.A.-based musician, producer, songwriter and DJ Cheyne Bush. A lifelong musician, Cheyne learned jazz on sax and guitar in school, and punk and experimental music at home. Back in the day he started the street punk and ska band Issue 89 and went on to play with punk acts like Agent Orange and The Diffs. After a tenure with metalcore band MidMourn, and experiments in minimal techno, IDM, 4×4 and 2-step garage, Cheyne landed on dubstep and sound system music under the influence of Burial, Shackleton and the Hyperdub and Skull Disco labels.

After collaborations with fellow Angelenos Brukha as Friendly Strangers in 2007 and LMNOP as Cybertooth in 2009, Cheyne started recording solo as Tetrad almost two years ago and released a clutch of deep dubwise tunes on labels like Sure State and Heavyweight in the UK. Most recently, he’s released his vinyl debut with the 7” single “Awaken Dub” on Portland’s vaunted ZamZam Sounds label, and a follow-up 7" with newly debuting Bay Area label Material Sound with his tune "Eazy Street."