his works include pieces both for instrumental and electroacoustic forces. he is the director of birmingham electroacoustic sound theatre, for which he has developed custom software, and an active developer of the supercollider computer music language. he was the lead editor of "the supercollider book" published by mit press, was a co-author of "electronic music" with nick collins (composer) and margaret schedel published by cambridge university press, and has published in journals including organised sound and the computer music journal.