He grew up in San Jose and started his musical life in 1962 at 16. He embraced the burgeoning folk scene in the Bay Area and across the country. In 1964 He formed a rock band called PEOPLE! In 1975 he changed careers and started composing music for film and multimedia working with Apple, Microsoft, JPL and other large corporations. he built his first studio then. In 1984 he score his first feature film starring Steve Buscemi and Brad Davis. Over the years Geoff has become a multi-faceted film and television composer, orchestrator, and songwriter who has scored over 50 full-length films. He has also contributed music to another 30 features.

Also, he scored and helped produce the Academy Award-nominated animated short "The Janitor" based on the story by his story telling group Celestial Navigations with Geoffrey Lewis (1995). In 1984 Geoff and Geoffrey Lewis recorded their first album as the group Celestial Navigations. The album charted on Billboard. Subsequently, they released other charting albums.

His TV credits include music for Bloodline, Game Of Thrones, Chicago Fire, SNL, Friends, Archer, CSI New York, The Blacklist, The Good Wife, Parks And Recreation, The Office, Sopranos, Catfish, Family Guy, Friday Night Lights, Weeds, The View and more. And recently he produced the latest PEOPLE! Album “The return of PEOPLE! Geoff’s first experience as a producer/director was 2020 award winning short THE STORY OF SPINNING.