Bennett recorded under his own name from the late 1950s and did extensive work as a composer and studio musician in addition to jazz playing. Often associated with The Wrecking Crew, he performed on many records by The Monkees and The Partridge Family.
In 1969, Bennett served as the principal bassist for Frank Zappa's Hot Rats project.[1] According to Bennett, "I was not familiar with Zappa’s music. Our paths never crossed. I was never a big fan of avant garde music in that sense. It was while I was working in the studio, what was it, 1967 [sic], I think? And I got a call from John Guerin. He said, ‘Get your stuff over to TTG’—that was in Hollywood—‘I got a double session for you with Frank Zappa.’ So we get there and we worked two double sessions for two nights. And that was the album, that was Hot Rats.”[2] He also played on subsequent Zappa albums such as Chunga's Revenge.[3]
His studio work also included bass on the 1969 Lalo Schifrin soundtrack to the 1968 film Bullitt as well as Greatest Science Fiction Hits Volumes 1-3 with Neil Norman & His Cosmic Orchestra.
In 1973, Guerin and Bennett joined Tom Scott's L.A. Express alongside Joe Sample and Larry Carlton.[2] After recording their eponymous debut album, the jazz fusion quintet served as the core band for Mitchell's Court and Spark (1974).[2] A subsequent iteration of the group (including guitarist Robben Ford and pianist Larry Nash) backed Mitchell on the live Miles of Aisles (1974)[2] and recorded two smooth jazz albums for Caribou Records following Scott's departure in 1976. After the band's dissolution, Bennett formed his own group, Freeway. He continued to perform with his last group, Private Reserve, until his death in 2018.[4][3]