Will the Circle Be Unbroken Warren Haynes , Gregg Allman , Derek Trucks , Susan Tedeschi , Devon Allman , Robert Randolph , Jimmy Hall , Sam Moore , Keb ' Mo ' , Brantley Gilbert , Dr. John , Pat Monahan , John Hiatt , Taj Mahal , Widespread Panic , Trace Adkins , Vince Gill , Martina McBride , Eric Church , Jackson Browne , Zac Brown & The Allman Brothers Band $ 1.29 6-May-14