This app is just wonderful, out of all the piano apps I downloaded. I was just bored like any other kid. I play piano. So I searched the word "piano". I was interested in the title, Cool Piano. Even the picture was interesting. So I decided to download it. I picked the right choice. I was addicted when I first tried it. Tap, tap, tap! As you download more songs, it gets harder. Like other puzzle games, the levels get even more difficult. That's one of the reasons why I love this app. It gets harder. Sorry for acting like Mr. Know-it-All. I recommend this to everyone who loves music. Thanks for reading my review! :)