This has some serious potential, but they should really consider the following things:
1. Keep the music consistent between levels. It stops and starts and it's annoying.
2. Use music clips that are more interesting. Aeolian and Ionian are really ... overused.
3. Use music clips that are more than 4 second loops.
They could do crazy shit with it, too, like having a tool that changes the key or moves the music onto a new section.