At an impromptu gathering in 1940, Sergei Rachmaninoff demonstrated at the piano just how he wanted his new orchestral work, Symphonic Dances, to be performed. Rachmaninoff, one of the greatest of all pianists, reduced the orchestral score for a single piano on this occasion. That recording is presented here in two versions: first, edited to conform to the score and again, just as the occasion unfolded, as Rachmaninoff jumped from place to place as he demonstrated.