Bit Quest by Kevin MacLeod
Wonderful 8-Bit ditty for an exploring action adventure platformer. My favorite part is at 16 seconds in... The rest of the piece was written around that theme. Check it out, yo! Careful of the spiked kittens on level 7... not cuddly. You can download this in uncompressed format here. Download comes with individual tracks so you can make your own mixes.