Damon attended the University of Southern California School of Music and departed before graduation to work in film music at the age of 20, with John Ottman on The Usual Suspects.

Damon composed the musical Bare, a Pop Opera; he is a founding member of Los Angeles based production group "God Help! Productions". He also composed and produced the musical Ann E. Wrecksick and the Odyssey of the Bulimic Orphans. Both shows played in Los Angeles and New York City. Damon composed the musical Plop which workshopped in Los Angeles, and also two songs for the "Urban Legends soundtrack". He composed the original score for Dustin Lance Black's award-winning film The Journey of Jared Price.

He lives between California and Arizona, and is proudly "out". Damon appears on a documentary featuring six gay men attending the Burning Man festival, called On The Bus (2001). He is currently completing an opera based on the lives of Harvey Milk and Cleve Jones.

Damon also orchestrated and conducted In Good Company (2004) and American Dreamz (2006) with Hedwig and the Angry Inch composer Stephen Trask.