Part three of our music reveals from the exclusive soundtrack of Grand Theft Auto: Chinatown Wars for PSP delivers the genre-leaping instrumental rock sounds of Tortoise.

Often referred to as 'post-rock', this Chicago-based outfit was one of the very first bands to fearlessly incorporate hip-hop, techno, dub and drum'n'bass into modern guitar-based rock'n'roll in the late 1980's, earning them worldwide acclaim. Influential to this day, Tortoise's most recent album is the critically acclaimed Beacons of Ancestorship. Check out the audio player above for a snippet from their station in Grand Theft Auto: Chinatown Wars for PSP.