He played keyboards in bands such as The Screamers, Twisted Roots, 45 Grave, Nervous Gender, SAUPG, Geza X and the Mommymen, Mike Watt and the Secondmen, Nina Hagen and The Deadbeats.
Roessler has also released solo recordings such as "Abominable," "Curator," "The Arc," "6/12," "Match Girl," The Turning of the Bright World,""Burnt Church The Opera" with Jeff Parker, and a four double album set "The Drug Years."
After graduating from high school, Roessler went on to study classical music at California State University, Northridge, for a few semesters before leaving in early 1978 to join innovative electropunk band, The Screamers.
After two successful years, The Screamers found themselves rapidly disintegrating as a band, causing Roessler to leave in January 1980, and would then go on to play in Nervous Gender with former Germs drummer Don Bolles as well as in Geza X and the Mommymen.
In November 2011, he relocated to the newly opened Kitten Robot Studios in the Silver Lake neighbourhood of Los Angeles where he has continued to write and record his own music and produce dozens of bands.