Theme of Solid Snake (Metal Gear Solid Integral version)

An arranged version of "Theme of Solid Snake" featured in Metal Gear Solid: Integral (not the original version) for the PlayStation. To listen to the tune in the game, you must dial frequency 140.66 on the Codec when you first enter the Canyon (where you fight Vulcan Raven on his tank). To my knowledge, this secret tune is not in the PC version of Integral.