Interesting. As another data point, my DS6 (untested, crazily mathematically precocious, but I would guess much more audio-sequential than visio-spatial) has been learning piano since September. He's doing well, but not, I think, exceptionally well. (That is, he seems to be further on than other children I know who started at the same time, but he still sounds like someone who started less than a year ago!) FWIW, this is the same experience I had as a child - people always say that maths and music go together, and for me in terms of enjoyment they did, but in terms of performing ability not so much! I always felt that what I was missing was some kind of motor skills element - I just couldn't produce exactly the sounds in my head - but perhaps it is about the audio-sequential/visio-spatial axis.
