I was having some fun with this game, I was first bothered by the songs always starting out easy and then progressively getting harder, because that forces you to want to use gems to continue if you mess up one note so you can practice that section, but then I realized you can only play a certain amount based on how many crates you have and I filled all of them fairly quickly. Not to mention that you can't really pick the songs you want to play, and have to wait awhile for difficult songs