From Halopedia, the Halo wiki
Halo: Combat Evolved soundtrack (Halo: Original Soundtrack) •
Halo 2 soundtrack (Halo 2: Original Soundtrack Volume 1 • Halo 2: Original Soundtrack Volume 2) •
Halo 3 soundtrack (Halo 3: Original Soundtrack) •
Halo Wars soundtrack (Halo Wars: Original Soundtrack) •
Halo 3: ODST soundtrack (Halo 3: ODST Original Soundtrack) •
Halo: Reach soundtrack (Halo: Reach Original Soundtrack) •
Halo: Combat Evolved Anniversary soundtrack (Anniversary) •
Halo 4 soundtrack (Halo 4: Original Soundtrack • Halo 4: Original Soundtrack Remixes • Halo 4: Original Soundtrack Vol. 2) •
Halo: Spartan Assault soundtrack (Halo: Spartan Assault Original Soundtrack) •
Halo 2: Anniversary soundtrack (Anniversary) •
Halo: Spartan Strike soundtrack (Halo: Spartan Strike Original Soundtrack) •
Halo 5: Guardians soundtrack (Halo 5: Guardians Original Soundtrack) •
Halo Online soundtrack •
Halo Wars 2 soundtrack (Halo Wars 2: Original Soundtrack • Halo Wars 2: Awakening the Nightmare Original Soundtrack)