Limited Edition American Marble 4LP Box Set! All-Star Performances Honoring Gregg Allman! Featuring Keb' Mo', Widespread Panic, Vince Gill, Jackson Brown & Many More! All My Friends: Celebrating the Songs & Voice of Gregg Allman captures a once-in-a-lifetime performance, honoring one of the most acclaimed and beloved icons in rock and roll history. A founding member of the Allman Brothers Band and successful solo artist in his own right, Allman possessed a voice that resonated through four decades. American Marble 4 LP set. Limited Edition. This 4xLP set features momentous performances by Warren Haynes, Derek Trucks, Susan Tedeschi, Keb Mo, Brantley Gilbert, Dr. John, Pat Monahan, John Hiatt, Jaimoe, Taj Mahal, Gregg Allman, Widespread Panic, Trace Adkins, Vince Gill, Martina McBride, Eric Church, Jackson Browne, Zac Brown, The Allman Brothers Band & more. Recorded at the historic Fox Theatre in Atlanta, this remarkable piece pays tribute to a voice that once heard is never forgotten.