And here's the first stuff the piano plays in the concerto's second movement.
The movement is an elegy in memoriam Milton Babbitt, and begins with about three minutes of slow music in the orchestra, without piano. The piano takes a figure from one of the winds for its own sad music before it starts the speeding up process to the faux Bach part of the movement. Yes, the orchestra plays in the empty spaces there.
In the MIDI, this part sounds like horse doody smells. I'm glad we're not using the MIDI.
What happens in the orchestra after this? Why, a brass fanfare. I mean, duh.