That's the Portland Cello Project covering Kanye West's "All of the Lights," taken from their December show at the Crystal Ballroom last month. If you're saying, "Hey, wait a minute, those aren't all cellos!" you are right. (Also, lighten up, Stravinsky.) PCP had a batch of horns and winds—and two drummers—playing along with them for the show, and there's more videos to check out, including:

A stunning collaboration with Typhoon
A version of "Longest Stare" by Norfolk and Western (w/N&F's Rachel Blumberg on drums)
The theme from the new Star Trek movie

The video is fine, but the audio sounds particularly good for a live recording, especially one from the sometimes troublesome-sounding Crystal Ballroom. Dig in.