Well it seems a shame that Mumford And Sons didn't win a Grammy award last night. They did however put on quite an amazing live performance and were humbly joined by a certain special guest. Watch it here on this link
http://www.spinner.com/2011/02/13/bob-dylan-mumford-and-sons-avett-brothers-grammys/
http://www.spinner.com/2011/02/13/bob-dylan-mumford-and-sons-avett-brothers-grammys/
