Woo hoo! Here's the first three and a quarter minutes of the piano concerto in full HD res, with page turns, and a better camera angle. It's hard, and Amy nails it. Am I right? Am I right?
The orchestra "grows out" of the piano in this excerpt. Not an original concept by any means, but you know. At least it doesn't "grow tired" of the pianist.
What happens at the very end? Big, long chords in the strings, and fast figuration in the winds that slows down. And why? Because that's what I wrote.