(READ ALL INSTRUCTIONS) To change the ball, find the sprite named "Guy". Look in the code and you should find a note that gives further instructions. (if the note isn't there when you go into the sprite's code, look around for it) To change the music, you need to go to the backdrop's code and you should find another note that also gives further instructions (if the note isn't there when you go into the backdrop's code, look around for it) Delete and enter your instructions when finished and don't forget to remix (unless you already did). Check other remixes if there are any.
Credit to Griffpatch (don't delete this, because you need to give credit to people, it is an important rule on scratch, though you can delete the words in these parentheses)