This must be 1952 recording. Horowitz's name perhaps is not associated at first sight with Beethoven's music, but many wonderful performances of those sonatas & concertos that Horowitz recorded just show how close the Beethoven's music was to his heart, his peronality. In our time there is a tendency to play this concerto ( and Brahms' too ) slower for some reason. The greatest Horowitz goes his own way, and it only helps to create this powerful gush of energy & gamut of emotions! Of course, choice of tempo is not a crucial factor in interpreting a musical piece, so there were many more "jewels" in his playing!