Page "Piano Concerto No. 4 (Rachmaninoff)" Paragraph 31

Ormandy and Rachmaninoff played the revised Fourth, with the Second Symphony, in Washington, Baltimore, and eventually New York, as well as recording the work for RCA.

Still, Rachmaninoff was never fully satisfied with the work, continuing to tinker with the orchestration even in the days immediately before his recording session with Ormandy, and lamenting that he did not find the time to reorchestrate the piece to his satisfaction.

Many of these changes never found their way into the printed score ; however, they have made it onto recordings by other pianists who have studied the composer's own recording, including Vladimir Ashkenazy, Stephen Hough, Leonard Pennario and Earl Wild.