Hi maniolink,
I'm sorry to read that. I didn't really think much about the music (I made it in around 20 minutes). I've made another piece of music, I don't know if you'd like it... It's another 4 chord loop, but I think the melody is better. And how did you measure the framerate?
Also, I didn't expect that about hitting the coins! I had a bit of trouble to make the program distinguish between falling with enough speed from above and the other cases. :D
Thank you for your comments! :)