Wait Until You See/Hear These Guys Rock the Cello

This is the duo 2CELLOS, composed of Luka Sulic and Stjepan Hauser playing their arrangement of The Trooper by Iron Maiden & William Tell Overture by Gioachino Rossini mashup.

This is what a certain rocker said about these guys according to their facebook page:

"...Go and see them live, because it really is astonishing! I can’t remember seeing anything as exciting as them since I saw Jimi Hendrix live back in the 60's..."
~Elton John