“Late in 1967, still struggling to write a keeper song, Allman found himself sitting in a room in Pensacola’s Evergreen Motel, holding Duane’s guitar, which was tuned to open E. “I picked up the guitar and didn’t know it was natural-tuned,” Allman recalls. “I just started strumming it and hit these beautiful chords. It was just open strings, then an E shape first fret, then moved to the second fret. This is a great example of the way different tunings can open up different roads to you as a songwriter.”