A great way to test musical virtuosity is to play "Flight of the Bumblebee," a portion of Nikolai Rimsky-Korsakov’s opera The Tale of Tsar Saltan. How fast can you play it on the organ? That's not bad. Now try using only your feet.
That's what Eric C. does in this video. He whips through "Flight of the Bumblebee" at 168 beats per minute on just the pedalboard alone.
-via The Presurfer