" Cirrus Minor " is a song written and performed Pink Floyd. It is the first track on their 1969 album Soundtrack from the Film More . The song would later be released on the compilation album Relics . 
Writing and recording
The song is 5 minutes 18 seconds long. It was written by Roger Waters and performed by David Gilmour on vocals and guitar and Rick Wright on organ. The song has a hallucinogenic, pastoral quality, with prominent organ and bird sound effects, like those that later that year featured on the Ummagumma track " Grantchester Meadows ". It was also included on Pink Floyd's compilation album Relics . The song features no drums, which creates a rather unusual feeling. The Hammond and Farfisa organ coda is similar to that found on the "Celestial Voices" section of " A Saucerful of Secrets ". While the Hammond provides a stately foundation with an Em-Bm-D-A-G-D-B sequence, about 1/4 way into the coda Wright introduces the Farfisa which, run through a Binson Echorec platter echo, produces the swirly, trembly, echoey sound that hovers over the Hammond.
The opening birdsong is from a 1961 recording entitled "Dawn Chorus" and the single bird featured over the organ part is a nightingale also from 1961. Both featured on an HMV sound effects single (together with a recording of owls) but presumably the band just borrowed the originals from the EMI sound effects library as EMI owned HMV.
"Cirrus Minor" has an unusual chord sequence: E minor, E flat augmented, G major, C# minor 7, C major 7, C minor 7 and B 7. The chords are built around the chromatically descending bass line. The B 7, C major 7 and G major chords are the only chords which fit into the functional context of the E minor key. This chord sequence gives the song a very surreal atmosphere.
- David Gilmour – acoustic guitar, vocals
- Richard Wright – Hammond organ and Farfisa organ
- Roger Waters – birdsong effects