This TED talk from 2008 was recommended to me by my piano teacher. If you haven't already seen it it's well worth taking a look. If you have seen it, a second look wouldn't be wasted.

[ted id=286]

After watching it I realised I had a considerable challenge in front of me - to transform myself from a rigidly centrist two buttock piano player to a more relaxed sometimes left-leaning, sometimes right-leaning one-buttock piano player.