Check out this cool no-instrument, all-voice cover of Taylor Swift’s I Knew You Were Trouble!
Apparently a lot of folks have tweeted Taylor the link; she sent it out to fans saying “I’ve had so many people send me this. SO unbelievably cool.”
The group is Walk Off The Earth, from Canada. They’ve already got about 100,000 followers on Twitter, probably partially thanks to Taylor’s tweet!
The video already has some 4 million views: