Michael Salvatori is an American composer, best known for his collaboration with famed composer Martin O'Donnell for the soundtrack to the Halo series and Oni. He is lesser known than his companion O'Donnell, but nevertheless he has been a predominant force to composing the score to the famed trilogy. Salvatori most recently worked with O'Donnell on the score for the final chapter in the Halo series, Halo 3.