Also, here's an odd one: DD recently learned the Star Spangled Banner on her band instrument, and then I saw her playing it fluently on the keyboard (she has never taken any piano lessons and is not particularly musical in a traditional sense, but has been teaching herself keyboard). She did not have sheet music in front of her. I commented on this and she told me she remembers all the actual *notes* from the band sheet music (as in, the song goes "A g D e F G," or whatever--that's obviously wrong, speaking of unmusical) and can then play them on the keyboard, since she also knows which keys are which notes on the keyboard. This struck me as a completely strange yet DD-typical way to do it...