Metal Gear Solid: Portable Ops Original Soundtrack is the official soundtrack for Metal Gear Solid: Portable Ops, released for Sony's PlayStation Portable. The soundtrack contains 44 tracks.
The musical score of Portable Ops was composed by Norihiko Hibino, Takahiro Izutani, Yoshitaka Suzuki, Kazuma Hinnouchi, Nobuko Toda and Akihiro Honda.
The ending theme ("Calling To The Night") was composed by Akihiro Honda and arranged by Norihiko Hibino and Akihiro Honda, with vocals by Natasha Farrow and lyrics by Nobuko Toda. "Calling to the Night" was later featured in Metal Gear Solid 4 as an iPod track, and Nintendo's Super Smash Bros. Brawl as one of the songs played on the Shadow Moses Island stage.
The soundtrack was first released in Japan on December 20, 2006.
