What should a recorder teacher in the browser do next?

Tomorrow Recorder Hero launches here.
It's a free recorder teacher that listens as you play: it hears each note, shows which holes to cover (on your own fingers, with the camera), and goes one note at a time, from the first note to real songs.

The launch is on Hypership day, so we'll be shipping what you ask for during the day. If you teach music, have a child learning the recorder, or played one at school yourself: what would you want it to do? A song, a lesson, a setting, something that confused you? Tell us here or on the launch, and we'll try to ship it the same day.