Peet began on piano at age six; he played in churches in Washington, Oregon, Idaho, and California while young.
He attended Westmont College from 1973 to 1977, where he was a founding member with John Rapson of the Frobisher Hall Art Ensemble.
Peet moved to Los Angeles in 1978 to play with John Rapson.
Peet has composed extensively for film and television, and also does production and engineering for Nine Winds, pfMentum, Blue Note, Enja, Atavistic, Little Brother, SST and other labels.
He wrote arrangements for Brian Setzer from 1992 to 1994, played with Bobby Bradford in 2000 and engineered the first Leviathan Brothers EP in 2005.