Yes, part of it came from my mother always pushing me aside. But there was also the part that was simply me. Even though Fred and I were physically identical—down to no birthmark or scar that could tell us apart—psychologically and emotionally we were complete opposites.

The only thing we truly shared, besides being born to the same parents and sharing the same womb, was our passion for guitar and music.

Fred had lost his way in life. Had I tried to help him? No, I hadn’t. Not because I ...