William Mulhall first came to prominence in the 1970s with his original art work for Led Zeppelin. Led Zeppelin were so impressed with his work that Mulhall was invited to sit with the band on stage at their now classic concert in the Belfast Hall on March 5th 1971. "When I met them, they were still just shy lads. They asked me to come along and sit up on the stage." Illustrated, feature articles on his life and art have appeared in Mojo, Guitarist, NME, Hot Press,Sunday Tribune, Business Plus, New York Art Guide. and on RTE Radio One's Rattlebag.