The 1970 Fillmore West Bootleg: 27 Minutes of Live 'Atom Heart Mother' with Brass, Choir, and a Totally Different Mix

The most famous Pink Floyd bootleg from the Atom Heart Mother era captures the band at the Fillmore West on October 30, 1970. What makes it essential is the full 27-minute live performance of the title suite, which they only played in its entirety a handful of times. The band was joined on stage by a local brass section and a small choir, giving the piece a raw, symphonic weight that the studio version only hinted at.

The mix on this bootleg is drastically different from the album. In the studio, the choir and brass were heavily submerged in the stereo field, often fighting for space with the Mellotron and Gilmour’s slide guitar. Live, the brass sits right up front—almost punchy and confrontational—while the choir feels more like a live room echo than a layered studio production. The rhythm section (Mason’s drums, with a loose, open hi-hat) is also drier and more present, which makes the whole thing feel less like a polished suite and more like a band trying to wrangle a 27-minute monster in real time. The result is an urgent, unpolished document of Pink Floyd’s most ambitious live experiment before they abandoned the piece altogether.