Mumford and Sons have cancelled their headlining performance at Bonnaroo in addition to next week's gig at the Telluride festival and a concert in Bonner Springs, Kansas.

Earlier this week, the band postponed a trio of shows after bassist Ted Dwane was forced to have surgery relating to a blood clot on the surface of his brain.

In a note posted to the band's Faceook page and website, the band shared that Dwane is improving:

"Dear friends,

It is with great joy that we can announce that Ted has been discharged from hospital and is on the road to a full recovery. The surgery went well, and the excellent medical team helping him are very pleased with his progress. He has been nothing short of heroic in how he has handled the whole ordeal, and now it has been medically proved that he does indeed have a brain.

Today, however, also marks the end of our Summer Stampede Tour. We were hoping to have made it out by Bonnaroo this weekend. But it is with sadness that we have to announce the cancellation of our scheduled performances at both Bonnaroo and Telluride Festivals, and our show at Cricket Wireless Amphitheater in Bonner Springs, KS. If we could've we would've, you know that about us. We trust that you can respect our collective desire to encourage Ted to make a full recovery, and that this is based purely on the medical advice we have received.

On behalf of Ted, and all of us really, we would like to thank every one for their compassion and support at this time and we are very excited to get back out on tour as soon as we can.

Ted, Ben, Marcus and Win"

Mumford & Sons still have several concerts on their calender.  Their next scheduled date is a high profile headlining show at UK's Glastonbury festival at the end of the month.  The band also has shows scheduled for the UK, Ireland, Australia, and Japan.  Mumford & Sons are scheduled to return to North America in August where they are expected to headline Lollapalooza in Chicago in early August.