"Focus" is the eighth track on the Quake Soundtrack.
Game level names: "The Necropolis" (E1M3), "The Crypt of Decay" (E2M3), "The Tomb of Terror" (E3M3), "The Elder God Shrine" (E4M3).
- Quake Soundtrack
This is the only version of the song available. Deep, slithering bass frequencies are joined by high-pitched pads and bubbling guitar sounds throughout the entirety of the piece.