Owen used to love singing along with the song by Kenny Loggins "Return to Pooh Corner". He loved watching the following video on you tube, calling it the "original Winne the Pooh". I still play it for him now, and his eyes open when he hears the familiar song. Although he is not able to focus on the screen, at least he is able to listen.
http://www.youtube.com/watch?v=O5qMGXq_nhU