A tetracello!
Cello Quartet Performs Nirvana, Iron Maiden, System Of A Down

This is a video of the Epic Cello Quartet (part of Epic Symphonic Rock) performing a medley of Nirvana songs, Iron Maiden’s ‘The Trooper’, and System Of A Down’s ‘Chop Suey!’ during a concert in Lima, Peru. They do an excellent job — I always enjoy hearing songs performed on different instruments. What I don’t enjoy is my roommate’s singing in the shower, although I do still cut the hot water to help him hit the high notes.