Vivaldi - Nulla in Mundo Pax Sincera

In the movie the guy on the trampoline is a young piano genius. His father, a holocaust survivor, is strict to the point of cruelty. This later causes a nervous breakdown in which David is unable to play. He get's his music back & begins to "Shine" again. Thus, the jumping on the trampoline naked is part of his healing & finding joy in music again.

http://youtu.be/KdCAfK_CN8U