Leo Matthew Abrahams is an English musician, composer and producer. He has collaborated with Brian Eno, Katie Melua, Imogen Heap, Jarvis Cocker, Carl Barât, Regina Spektor, Jon Hopkins and Paul Simon. After attending the Royal Academy of Music in England, he started his musical career by touring as lead guitarist with Imogen Heap.

Karl Hyde is an English musician, composer and artist. He is a founding member of British electronic group Underworld. Hyde has also released a solo album, made albums with Brian Eno and Matthew Herbert, and contributed towards the score for the London 2012 Summer Olympics opening ceremony alongside Rick Smith.