this app is OK for beginners who have never played piano before, but half the songs don't sound a bit like what it's supposed to be (i didn't pay for it, the songs just popped up one day). everything else is awaste of money, the lessons do not teach shape. music is not just the notes! but the machine can't tell, which is why it's better to just get lessons with a real teacher. preferably one who knows what they're doing.