classical musicians, actually famous

So several of my classmates from Northwestern formed The Gentlemen of NUCO a few years back as a strings/percussion ensemble performing Radiohead orchestrations (I hate to use the word covers, because their music really does re-compose the songs in a completely original way). Since then, they have expanded their repertory to Kelly Clarkson and Lady Gaga. And tonight, on America's Got Talent (NBC, 9/8 c), they will tear up Since You've Been Gone.
Edit: I'm an idiot. They actually broadcast the audition last night, but only played the selection of the song you'll see below. But hopefully we'll have more out of the Gentlemen when the show airs the Vegas performances in a couple weeks.
Here's a preview

These are kids who play Brahms and Berio, know what Darmstadt is, and headlined Music Marathon 2009. It's going to be awesome.