While there are many well-known US composers, O’Donnell created the original score for Halo, which is considered one of the most iconic compositions in gaming history. O’Donnell was Bungie’s Audio Lead until April 11, 2014 and began his music career writing television and radio jingles as well as scoring for radio and film.
O’Donnell moved to composing video game music when his company, TotalAudio, produce the sound design for the 1997 title Riven. After producing the audio for Myth II, Bungie contracted O’Donnell to work on their other projects, including Oni and the project that would become Halo: Combat Evolved.