During a headlining set at Washington state's Gorge Amphitheatre on Saturday (June 1), Brandi Carlile brought legendary Americana performer Emmylou Harris to the stage for a cover of Sarah ...

Brandi Carlile and Emmylou Harris sing Sarah McLachlan's 'Angel' in Washington.

Emmylou Harris and the Stanley Brothers have both recorded the hymn, with the latter's version appearing on the hit soundtrack for the 2000 movie O Brother, Where Art Thou?