It is, indeed, a thing:
http://www.phoenixnewtimes.com/music/unearthing-metals-classical-roots-6589416
Black when VH1 Classic was worth a damn, they did a series on the history of metal and one episode was devoted to metal’s classical roots.
A bit sloppy. Check out the Ry Cooder, Steve Vai duel in the movie “Crossroads” for a better effort.
I know. Rock is life.
The cellists, Luka ulić and Stjepan Hauser, (2Cellos) are both Croatian.
They are also classically trained, and have some very good straight classical videos out as well.