He formed a band called the Buggles and had a hit with Video Killed the Radio Star. In 1980 Horn became the frontman for the rock group Yes which he left in 1981 after seven months to concentrate on his production work.
He has produced acts like Frankie Goes to Hollywood, Dollar, ABC and Propaganda.
He co-founded record label ZTT in 1983 and received a Grammy in 1996 for Seal's second album.