Gregg Allman’s bandmates and confidantes reflect on his life and music. Read Part I featuring Warren Haynes, Derek Trucks and Oteil Burbridge here.Marc QuiñonesWhat are you memories of the first time you saw Gregg perform? Until I met him, I had never seen him. I didn’t even know who the Allman Brothers were when I joined them. When I initially met Butch Trucks [backstage after Quiñones…