On April 22, 1971, the Grateful Dead performed at the Bangor Auditorium in Bangor, Maine, during a prolific period in their career. This concert occurred shortly after the release of their live album "Grateful Dead" (also known as the "Skull and Roses" album), which was issued in 1971 and featured a mix of live performances and new studio tracks. The band was in the midst of establishing themselves as a significant force in the music world, blending rock, jazz, and psychedelic influences. Notably, the setlist from the Bangor show features staples like "Bertha" and "Playing In The Band," which exemplify their ability to seamlessly weave improvisation into traditional songwriting, a hallmark of their style. This period marked their rising popularity as they became known for their extensive touring and the dedicated following of "Deadheads." The concert exemplifies their expanding musical sophistication, which was solidified in subsequent albums and live performances.