Halo Theme Song's Secret Origin Revealed - IGN Unfiltered

Former Bungie composer Marty O'Donnell tells the FULL story of how the iconic Halo theme song came to be. Hint: it involves The Beatles. -----------------------------­--- Follow IGN for more! -----------------------------­--- YOUTUBE: https://www.youtube.com/user/ignenter... IGN OFFICIAL APP: http://www.ign.com/mobile FACEBOOK:   / ign   TWITTER:   / ign   INSTAGRAM: https://instagram.com/igndotcom/?hl=en WEBSITE: http://www.ign.com/ GOOGLE+: https://plus.google.com/+IGN