The movie-making duo say they will focus on two aspects of the musician's life: tracking his journey to success through the formation of the Allman Brothers Band and their explosion onto the music scene, and the portrait of an older Allman who recognizes and conquers his demons.

"We knew it was a great story, but didn't know how great it was until we read the book," said Miller, who added that the memoir's arc of "uplift" is what attracted them. "That journey and coming out the other side is not the normal falling-into-hell story that rock and roll often is."