Music is great, really defines the mood of the game! I think this is a pretty cool little game, once I understood the controls, was fun trying to hit all the balloons!
I am not sure is there was something up with the collision of the balloons, but I missed a lot when I swear I was hitting some of them. It might have been because the orientation of the arrows weren't quite right, not 100% sure though.
I wasn't sure what the difficulty buttons did? Would have loved to see some kind of on screen score or stats, to track some kind of progress. Otherwise, it was a decently fun experience!