Alex Crossan was born and raised on the small island of Guernsey. After playing guitar, bass, drums and singing in local punk, hardcore, deathcore and gospel bands as a teenager, he discovered Ableton Live at the age of 16 and began making trap.

He entered the electronic music scene after learning about Hudson Mohawke. He streamed music via YouTube and discovered James Blake, Cashmere Cat and SBTRKT. His influences including Gorillaz and The Smiths, inspired him to write music and learn to play different instruments.

At the age of 17 he uploaded his first tracks, remixes and bootlegs to Soundcloud. The track “Lotus Eater” was picked up by BBC Radio 1 with Zane Lowe, Annie Mac, Huw Stephens and Phil Taggart all playing the song on their shows. After leaving Guernsey to study English Literature at University of Sussex in Brighton, Crossan began playing his music live, with sold out shows at the Green Door Store in Brighton and Electrowerkz in London. Mura Masa started his career by posting a mixtape called Soundtrack to a Death to SoundCloud in 2014. The mixtape was subsequently distributed globally by German label Jakarta Records.