A Cello Rondo is an amazing video performance by Ethan Winer:

I thought it would be a fun project to write and record a pop tune using nothing but cellos, then make a video of the performance. The original goal was to keep everything entirely acoustic, with no recording studio effects or other processing. I quickly abandoned that idea to get more variety of sounds, but everything you hear was played entirely on my cello. There are 37 separate cello parts recorded on 23 tracks using 37 plug-in effects.

Well worth viewing/listening...