Wow, that was a crazy fast game. I think it is extremely hard for a new player. The pop level was a little more forgiving, but the rock one was completely impossible to succeed. Looking at the comments you're aware of that issue, but another thing I may add, is that you could take from classic games similar to this one, that the circles that appear show the arrow that you need to press. As you don't have enough time to process it with your eyes, any visual help is good.