WATCH: Nina DiGregorio's version of Van Halen's Eruption, played on 7-string fretted violin

Nina DiGregorio is a very successful musician. She's performed with The Killers for President Obama. She's played with Deep Purple, Cheap Trick, Shakira, Michael Bublé, Boz Scaggs, Peter Cetera, Stevie Wonder, the Trans-Siberian Orchestra and plenty more.

But may be remembered most for her astonishing, fleet-fingered version of Eddie Van Halen's classic instrumental showpiece Eruption.