[Horowitz plays Rachmaninov's Polka de V.R.] Peter Gelb: What Horowitz did was he selected a program that enabled him to reserve what he used to call the 'pyrotechnics.' That was his name for it, for explosive, explosive technical playing. That he would reserve those moments for strategic points in the program, typically in the last piece.
[Horowitz continues to play Rachmaninov's Polka de V.R.]