Greg is a 25-year veteran of the Bay Area music scene. Initially from the state of Washington , Greg was one of the founding members of the "Heart of Gold Band", along with Keith and Donna Godchaux, when the band was formed in 1980. After the band's breakup, he and "Heart of Gold" guitarist Steve Kimmock went on to form "Zero". "Zero" performed over 1300 concerts and recorded eight albums. The band was a revolving door for San Francisco musicians and included at various times: John Cipollina, Jerry Garcia, Nicky Hopkins, Pete Sears and many more. More recently, Greg started the band, Greg's Eggs, "dynamic improvisational rock with soaring melodies, new Robert Hunter lyrics, and tons of drums". "The best band I've seen in ten years"; writes Dennis McNally, author and publicist for the Grateful Dead. Greg is also a member of "The Mix" with Melvin Seals, Jeff Pevar, and John Kadlecik and Kevin Rosen of the "Dark Star Orchestra".

Greg has composed soundtracks for plays, film and TV; published over fifty original songs, and played drums on more than twenty-five albums. Joel Selvin of the San Francisco Chronicle writes; "A musical drummer with powerful dynamics that puts down a beat that is the heart of the band."