Ok that was fun! I was just messing around with the video of David below-as you can see he was far more interested in that thing in my hand than in doing anything cute. I couldn't figure out how to listen to the music offered either. So I just picked one out of the classical selection.
This was a couple of weeks ago before David learned how to crawl. If I did it today, you would probably get rather dizzy bouncing around as I chase him with the camera.