Adam Hamilton is a Los Angeles-based music producer, songwriter, and session musician. Hamilton was the bass guitarist of glam metal band L.A. Guns from 2001 through 2007. He also played drums for 1990s alternative rock band Joe 90, and worked as session drummer for alternative/neo-psychedelic band The Brian Jonestown Massacre. Hamilton is a multi-instrumentalist who plays guitar, bass guitar, keyboards, and drums.