Harmonica player Thom “Ace” Doucette is the only guest musician on At Fillmore East, his harp appearing on “You Don’t Love Me” (his solo on “Stormy Monday” was edited out for the original release).

"The things that drew us to each other, or the thing I remember most about him, was just incredible curiosity. Duane had an incredible curiosity about the music and he had an incredible zest for it. Duane had that curiosity, everybody in the Allman Brothers did. They were all voracious students of the music." Thom Doucette, on the right with Duane