In late 1973, Pink Floyd was at a pivotal point in their career, following the release of their critically acclaimed album "The Dark Side of the Moon," which came out in March of that year. The live recording from the Empire Pool in Wembley shows the band performing this groundbreaking album in its entirety, marking one of the early presentations of the material that would solidify their status in the rock genre. This concert was not just a display of their existing hits but also featured works in progress, including the early versions of "Shine On You Crazy Diamond" and other proto-Animals tracks, indicating their ongoing evolution as a band. At this point, Pink Floyd was gaining massive popularity and influence, with "The Dark Side of the Moon" setting new records in album sales and chart performance, ultimately becoming one of the best-selling albums of all time.