He has collaborated with Clint Eastwood, Bill Conti, and has scored for silent films including Alfred Hitchcock's The Lodger: A Story of the London Fog.
[4] After writing music for theatre, records, advertising and television, Irwin moved to the United States in 1990, composing and orchestrating for feature films.
[3][5] In the late 90s, Irwin scored the silent classics The White Hell of Piz Palü directed by German director Arnold Fanck, and Alfred Hitchcock's The Lodger: A Story of the London Fog.
[3] Irwin has moderated numerous interviews, among them are six-time Oscar nominee Alexandre Desplat, Christophe Beck, Bruce Broughton, and Randy Edelman.
[1] He was nominated for AACTA and APRA awards for his recreated songs in the mini-series Peter Allen: Not the Boy Next Door.