Metal Gear Solid Peace Walker Main Theme

"MGS-PW" Main Theme is a musical theme in Metal Gear Solid: Peace Walker, composed by Akihiro Honda. It was first unveiled as the background track for 2009's E3 debut trailer, as well as the opening movie for the game itself.

It was also used in-game for the first phase of the final battle with Peace Walker in Chapter 4, with some bars being heard in the preceding cutscene of the fight, as well as the concluding cutscene of the preceding level. Because of the Extra Ops mech battles to some extent reusing the cutscenes preceding the battles, some bars were heard in the preceeding cutscene of the Custom and Type II battles against Peace Walker. It was later released as a DLC Walkman track.

A remixed version can also be heard in the instrumentals for the song It Has to Be This Way during the final fight against Steven Armstrong in Metal Gear Rising: Revengeance.