Martin O'Donnell – Halo: Combat Evolved - Original Soundtrack

Halo: Original Soundtrack - Music - Halopedia, the Halo wiki

Martin O'Donnell Videos : : Free Download, Borrow, and Streaming : Internet Archive

Martin O'Donnell talks about the way Halo Anniversary music wasn't recorded the way he wrote it. (Clip is from Noodles Interview with Marty) : r/halo

Martin O'Donnell - Wikipedia

HALO COMBAT EVOLVED Anniversary Vinyl LP NEW Martin O'Donnell/Michael Salvatori - auction details

Original Halo composers sue Microsoft over unpaid royalties dating back 20 years

Martin O'Donnell, Halo Alpha

Halo: Combat Evolved - Definitive Soundtrack

HALO Original Soundtrack

Brothers in Arms – Martin O'Donnell Halo Combat Evolved Brothers in Arms (English Horn) Sheet music for Oboe (Solo)

HALO COMBAT EVOLVED Anniversary Vinyl LP NEW Martin O'Donnell/Michael Salvatori - auction details