Joe Cassidy's career as a singer, songwriter, producer and composer spanned more than three decades. His pursuit of a career in music carried him from his native Belfast to Manchester, London, Chicago, Los Angeles and finally back to Chicago where he died suddenly on 15 July 2021.
Joe performed and recorded as Butterfly Child, also with the band Assassins, and was a pivotal member of the Shepard Fairey project NØISE. He was also involved in music production and management, working with a broad array of artists including Jimmy Webb, Ashley Campbell, Michael McDermott, Jonny Polonsky, Ree-Vo, Ethan Gold, Plastic Crimewave Sound and the Webb Brothers.