Template:RealworldTemplate:Bstaff Michael Salvatori is an American producer and composer of music. He has worked closely with Martin O'Donnell to produce the music of the Halo universe. His extensive involvement has included work on Halo: Combat Evolved and Halo 2, as well as deep cooberation in the Halo: Original Soundtrack and the Halo 2: Original Soundtrack. It is likely that he is working closely with O'Donnell in the production of music and sounds for Halo 3.