Mumford & Sons, whose blend of American bluegrass and U.K. traditional folk coupled with a penchant for iambic drunken sing-a-longs, earned spots on several late night shows this year. But not until you reach Fallon do you get the ultimate 140 character test: ?uestlove’s twitter review. Ok, not really. But look what ?uest said about the boys’ performance:

“damn London’s Mumford & Sons just outdid every weird brooklyn band setup ive ever seen w/ the drums & banjo alone”#highlyimpressive

Sure, there might be some hyperbole in there. I mean, Yeasayer isn’t just a bunch of Williamsburg assholes with some blip bleep machines. But watching Mumford & Sons create such a massive, energetic, fist-pumping sound out of acoustic instruments is certainly refreshing. Seeing M&S live is like watching a lion hunt: they are acutely focused, careful with every step, and when the ball drops, they explode with fury and ravenous hunger. “Cave”, their second single off of their stellar debut Sigh No More showcases the seeds and fruits of what this band can do. Check it out below.

Want that sound in the flesh? Mumford & Sons are all over the map this summer, and you can get your tickets at Ticketmaster.com:

Mumford & Sons 2010 Tour Dates:
05/20 – Washington, DC @ 9:30 Club
05/21 – Cleveland, OH @ Beachland Ballroom
05/22 – Columbus, OH @ Wexner Center
05/24 – Chicago, IL @ Lincoln Hall
05/29 – George, WA @ Sasquatch! Music Festival
05/30 – Vancouver, BC @ 560 Club
05/31 – Portland, OR @ Aladdin Theatre
06/03 – San Francisco, CA @ Great American Music Hall
06/04 – Los Angeles, CA @ Henry Fonda Theatre
06/07 – Phoenix, AZ @ Rhythm Room
06/09 – Austin, TX @ Antone’s
06/10 – Dallas, TX @ House of Blues
06/12 – Manchester, TN @ Bonnaroo Music Festival
06/14 – Bloomington, IN @ The Bluebird
06/15 – St. Louis, MO @ Off Broadway
06/16 – Kansas City, MO @ Record Bar
06/17-20 – Telluride, CO @ Telluride Bluegrass
07/09-12 – Kinross, UK @ T in the Park
08/06-08 – Chicago, IL @ Lollapalooza
09/09-12 – Isle of Wight, UK @ Bestival