Douglass started his musical career in the late 1960s with his band The Virtues, which later turned into the acid-rock group Country Weather.
After recording Kihnspiracy, Kihntagious, and Citizen Kihn, Douglass left the group and toured with Tom Fogerty and Eddie Money.
Douglass has lived in the San Diego area since 1994, where he remains active as a touring guitarist (Big Brother and the Holding Company, the Electric Flag), a studio player, and a music instructor.
He leads his own four-piece group, the Greg Douglass Band, playing concerts, clubs, corporate events.
Additionally, Douglass' work with the Steve Miller Band has been reissued numerous times on greatest hits compilations.