Glory

Conductor Tara Simoncic calls the feeling of having her movements and body language guiding an orchestra to produce the sound that she wants "amazing."

Well, we guess your, uh, hands could someday end up on a stamp, or something. (Source)

Sure, you may live for the roar of applause at the end of a job well done; but the best feeling will come from your own personal satisfaction at the end of a perfect performance.