I completed the starter coarse then I couldn't do anything. they taught me the basics and said wanna keep playing, nope you have to pay. the only reason I downloaded it is because the ad said It was completely free, no charges at all and then they say oh ya BTW you have to pay for everything in the app even sheet music. They tried but failed miserably if I could I would give 0 stars. Also how are you supposed to balance your device on your piano or keyboard.