Deep in the forest,a group of animals are trying to learn all kinds of music instruments. They try their best to learn these music instruments,however,things are not quite easy as it seems to be. Some animals don't even know how to play although they try their best. Cat learns fast and can play well,so he decides to set an example and show others how to play piano. Your mission is simple:follow the cat to play the piano. If cat presses a button or more,you do exactly as how the cat does,in exactly the same order. That's it!