Steve Martin Filling In For Mumford & Sons

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Given Mumford & Sons bassist Ted Dwane's recent brain surgery, Steve Martin and his banjo are stepping up to help the group as their band-mate recuperates.

Steve Martin & the Steep Canyon Rangers will headline the Telluride Bluegrass Festival on Thursday, June 20, in place of Mumford & Sons who had to cancel last week. "No one is more disappointed than the band to not be playing the 40th Telluride Bluegrass, but the group will be supporting their brother on his return home to London to help him make a full recovery," the festival's release reads.

Martin, 67, announced that his band would be filling in, tweeting: "All best wishes to Mumford's Ted Dwane, honored to face angry mob tomorrow at Telluride on their behalf. @SteepCanyon @MumfordAndSons."

Meanwhile, Dwane seems to be in good spirits after undergoing a serious surgery for a blot clot. The group's Twitter posted a photo of the 25-year-old musician on June 17, 2013, with Dwane writing: "Bear with a sore head! Thanks so much for all the well wishing, it seems to be working! I'm home."