After a 3 year stint in the cast of Jesus Christ Superstar, Billy formed The Ferrets, who in 1977 had a no1 hit ("Don't Fall In Love") and gold album ("Dreams of a Love"). Countless bands and gigs followed, today he still plays in his original band, and up until 2004 worked in a music production company (Duffield Kenihan Pty Ltd) creating music for TV commercials, and co-producing the music for "Round The Twist" (Children's TV Foundation).

Billy has also composed music for several short films, including "The Bird" (VCA 1996), which won best music in its category. In 2005, with a home video-recording facility, composing and working on music for film is the priority, and any enquiries can be forwarded via email.