All My Friends - Celebrating the Songs & Voice of Gregg Allman 2014 Synopsis - 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 possesses a voice that has resonated through four decades.