Mumford & Sons Join Haim For Glastonbury Rolling Stones Cover

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June 29, 2014 | 9:25am EST

British folk rockers Mumford & Sons joined U.S. stars Haim onstage at Glastonbury Festival on Saturday to perform a Rolling Stones track.
The Wire hitmakers Haim were performing for fans at Mumford & Sons’ specially-curated Gentlemen of the Road stage on the site when they announced a special treat for the audience.
The I Will Wait rockers then joined the sibling trio for a rendition of Dead Flowers. After the collaboration, bassist Este Haim told the crowd, “How was that with a bit of Mumford & Sons for you.”