The Dave Brubeck Quartet playing "Blue Rondo a la Turk". Yes I know they (Brubeck I guess) wrote the song but I grew up listening to Keith Emerson play "Rondo" on a much-abused Hammond organ, first with the Nice and then with ELP.
I had heard Brubeck's version before but somehow never clued in that it was the original. Talk about a different style !