Congrats to the Avett Brothers who just announced they'll be joining John Mayer on four dates of his current Battle Studies tour:
Jul 31 Bristow, Va.
Jiffy Lube Live
Aug 13 Cuyahoga Falls, Ohio
Blossom Music Center
Aug 14 Tinley Park, Ill.
First Midwest Bank Amphitheatre
Aug 15 Noblesville, Ind.
Verizon Wireless Music Center