Please have a look, here (web Flash) – you might like it. It features dynamic ambient music.

My first entry! Loved it, and will enter again. Missed the first day of LD, but I managed to enter the Jam and cross the finish line (all that matters).

Overall happy with the result.

The good:

1. I did it!!!
2. Separate tracks fading in and out makes it atmospheric.
3. It kinda looks nice and minimalistic.
4. The later levels move in interesting ways.

The bad:

1. Wish I had more time to spend on the music.
2. Threw the levels together in my sleep.
3. Didn’t have time to explore mechanics.
4. The game is very hard, especially since you only have one life.