The practice seems faulty for the on screen keyboard. I could add random notes or mash the buttons and it'd count as a clear, which makes me not ready for when the song comes along. You only get two courses for the on screen keyboard, one course for an actual keyboard, then any other content is locked to premium. So if you are looking for a skill to learn for free, this app isn't it. It makes me appreciate that something like Duolingo will give me courses for free so I can actually learn.