Marty O'Donnell is an American composer and sound designer best known for his work in the video game industry. He gained fame for creating the iconic music for the Halo series, which significantly contributed to the franchise's success. O'Donnell co-founded the game development company Bungie and worked there for many years, helping to shape the audio landscape of several popular titles. In addition to his work on Halo, O'Donnell has composed music for other games, including Myth and Destiny. His compositions often blend orchestral and choral elements, creating immersive soundscapes that enhance the gaming experience. O'Donnell has received numerous awards for his contributions to video game music.