![Subbing for the Mumfords](http://townsquare.media/site/443/files/2013/06/jackjohnson.jpg?w=980&q=75)
Subbing for the Mumfords
Earlier this week, we learned that Mumford and Sons bassist Ted Dwane suffered from a blood clot in his brain, causing him to undergo emergency surgery. As a result, the band has been forced cancel their appearance at this weekend’s Bonnaroo Music & Arts Festival in Manchester, Tenn.