
The music adapts seamlessly to the different areas, and the voices are fun and silly. It's very well implemented, but it all gets a bit on my nerves after a while.
I tested out how exiting a level before I got every item worked. It was quite disappointing - the game resets the collected musical notes and the little colored dudes you save, so you have to collect them all again to get everything. Very annoying. The lesson is that I should get absolutely everything before exiting a level.