"Outer Heaven" is a musical theme in Metal Gear Solid: Peace Walker. It first appeared in the TGS 2009 trailer for the game as the main background theme, and was composed by Kazuma Jinnouchi & Nobuko Toda. Parts of it also play on a loop when Big Boss, riding The Boss's horse, chases Peace Walker to the Nicaraguan border.

It was later released as a DLC Walkman track for the game.

"Outer Heaven
Composed by: Kazuma Jinnouchi & Nobuko Toda
Used as the main background theme for the TGS 2009 trailer.
Equip the "WALKMAN" during any mission to play the specified song as a BGM.
―Outer Heaven description in PSN.
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