Former drummer for the rock group Missing Persons. He also played for The Breaker Brothers and was a primary drummer for Frank Zappa.
He attended the College of Marin.
He auditioned for the band Thin Lizzy.
He married Dale Bozzio. His son and his step-daughter, Marina, also became drummers.
He performed on several Frank Zappa albums, beginning with 1975's Bongo Fury.