[teach]

This is really cool. I suspect a lot of people didn't get far enough to actually try anything; it took a lot of clicks to start the first note.

A suggestion: don't vanish the instructions once the song appears! Once I saw the song loading would take a while, I switched to a different tab, and when I came back they were gone.

[plamere]

I updated the app, to keep the help info there. It is a good suggestion. Thanks!