Which former Beatle is credited as a composer on Destiny Original Soundtrack?

Paul McCartney is credited as a composer on Destiny Original Soundtrack.

The 2014 soundtrack credits McCartney alongside Michael Salvatori, C. Paul Johnson, and Martin O'Donnell. It was released digitally on September 26, 2014, and contains 44 instrumental compositions connected with Bungie's game.

McCartney's involvement went beyond a name in the credits. He collaborated with O'Donnell for nearly two years, exchanging musical ideas, melodies, and themes while Destiny was still in development. He also wrote and recorded “Hope for the Future,” an original song inspired by the game.

A common mix-up is confusing the official soundtrack with Music of the Spheres, an earlier eight-part companion piece. McCartney contributed to both projects, but the question's soundtrack credit specifically refers to Destiny Original Soundtrack. O'Donnell's dismissal from Bungie in 2014 also happened before release, but his completed work remained in the game.