Wolfquest has a fantastic soundtrack. It fits very well, and is very atmospheric. I jumped at the chance to own the soundtrack- after all, it was only $3 (plus an extra $1 I willingly spent to support the Wolfquest team.) The purchase included the full soundtrack and a video of the composer talking about how he came up with the music for the game. All the tracks are just as good as in the game, and there is also a special bonus track, an unused piano version of the Lost River theme, and as soon I heard it, I was blown away. I can only really compare it to the Homestuck track Flare. It was well worth the money I spent and I can say I have high hopes for Episode 3: Tower Fall's soundtrack.
The song is Lost River Piano Theme from Wolfquest.