“Roberto Prosseda is a concert pianist of the old school who typically performs in white tie and tails. But for his most recent spate of concerts, he pairs them with slippers–five-fingered rubber-coated slippers that look vaguely amphibian. That’s because Mr. Prosseda plays with his feet as well as his hands. The Italian pianist is on a one-man mission to revive the music of the pedal piano, a monstrous double-decker grand piano that was popular in the late-19th century but has long since fallen out of fashion.”