On September 18, 1971, Pink Floyd performed a live set in Montreux, Switzerland, during a pivotal period in their career, shortly after the release of their album "Meddle" (released in November 1971). "Meddle" marked a significant transition for the band, showcasing their evolving sound and experimental approach, particularly noted in the epic track "Echoes," which became a central part of their live performances. During this concert, Pink Floyd also played other compositions that highlighted their atmospheric sound and intricate musical arrangements, such as "Set The Controls for the Heart of the Sun" and "Atom Heart Mother." Notably, this live recording captures the band at a time when they were beginning to gain widespread recognition and solidify their reputation as pioneers of progressive rock, just before the monumental success of their later works like "The Dark Side of the Moon."