On August 21, 1966, The Beatles performed in Cincinnati as part of their last full-scale concert tour. At this juncture, they had recently released the groundbreaking album "Revolver" in August 1966, which showcased their innovative approach to music and marked a departure from their earlier pop sound. This period was pivotal for the band, as they began to explore more complex musical themes and studio techniques. Interestingly, this concert was notable for encountering challenges with sound quality, a persistent issue during their live shows due to their increasingly complex music and the cacophony of screaming fans. Following this tour, The Beatles would stop performing live altogether, focusing instead on studio recordings, leading to the creation of landmark albums like "Sgt. Pepper's Lonely Hearts Club Band" the following year. This Cincinnati concert thus stands as a significant moment in their live performance history, marking the end of an era.