Walk off the earth

Canadian five-piece vocal group Walk Off the Earth, who gained Internet fame with their YouTube cover of Gotye's 'Somebody That I Used to Know,' are back with a version of Taylor Swift's 'I Knew You Were Trouble.' Don't miss their unique a cappella spin on Taylor's track.

Canadian five-piece vocal group Walk Off the Earth, who gained Internet fame with their YouTube cover of Gotye's 'Somebody That I Used to Know,' are back with a version of Taylor Swift's 'I Knew You Were Trouble.' Don't miss their unique a cappella spin on Taylor's track.