Arm bending pianist

A US student has become an online hit after realising a rare genetic condition means he can play the piano while facing away from the keys.
Evan Petrone has the ligament-loosening disorder Ehlers-Danlos Syndrome (Hypermobility Type) which means he can bend his limbs in all sorts of odd directions.
Given he is also an accomplished pianist he decided to combine the two and play the piano backwards by rotating his shoulders out of socket and sitting facing away from the instrument