In January 1969, when the live recording of "Astronomy Domine" was captured, Pink Floyd was transitioning from their early psychedelic phase into a more experimental sound. This period followed the release of their debut album, "The Piper at the Gates of Dawn," which was released in August 1967 and featured their original frontman, Syd Barrett. "Astronomy Domine" is one of the standout tracks from this album, showcasing the band's innovative approach to sound and their fascination with space themes. Notably, the live performance from 1969 reflects the band's ongoing evolution, as Barrett was still heavily involved before his departure later that year due to mental health issues. This performance marks a pivotal moment in Pink Floyd's history, illustrating their growing concert prominence and foreshadowing their future experimental work, including the ambitious concept albums that would follow in the 1970s.