Richard Grayson, an American composer and pianist, has a knack for improvising on the piano. Ask him to play Darth Vader's theme from Star Wars in the style of Beethoven, and he has it covered. (Watch above.) The same goes for The Muppets' Theme in the style of a Bach fugue; "Singin' in the Rain" in the style of Wagner, or Wagner's "Ride of the Valkyries" in the style of a Tango. You will find 70+ improvisations on Grayson's YouTube Channel. Find it here.