Happy 53rd anniversary to the Zabriske Point film, which was released on this date in 1970 in the U.S.

Pink Floyd’s contributions to the album were recorded in November and December 1969, after the release of Ummagumma. “Come in Number 51, Your Time Is Up” is a re-recording of “Careful with That Axe, Eugene,” originally released as a b-side in December 1968.

“Love Scene (Version 4)” is a Rick Wright solo piano composition. “Country Song” (also known as “The Red Queen”) is a ballad filled with chess metaphors. “Unknown Song” (also known as “Rain in the Country”) is a relaxed instrumental. “Love Scene (Version 6)” (also known as “Alan’s Blues”) is a bluesy instrumental. A track entitled “Fingal’s Cave” and another called “Oenone” were recorded but did not appear on the finished album.

Pink Floyd also recorded other unreleased material during the same sessions. Most notable is a lengthy composition which at that time was known as “The Violent Sequence” (later released on Dark Side of the Moon Immersion Box Set).

This was later reworked, as “Us and Them” from The Dark Side of the Moon. An additional number of tracks of previously unreleased studio work from these sessions have been released in 2016 on The Early Years 1965–1972 (Volume 4: 1970: Devi/ation).