This soft acoustic love song may be quite uncharacteristic of the band's previous and future material. Guitarist David Gilmour composed the chord sequence using an open E tuning (EBEG#BE), played in a series of arpeggios, composed the melody and maybe part of the lyrics (along with Roger Waters). This song also features slide guitar work by Gilmour, as well as a fretless bass played by Waters. The song begins and ends in the key of E major, with a darker middle section (following the lyric "and the candle dies") in the parallel minor, E minor. Both the E major and E minor chords feature the ninth, making this song one of many Pink Floyd songs to feature a prominent E minor added ninth chord, "Em(add9)". Throughout most of the song, the bass line remains on E as a pedal point, creating a drone. A chord named "G#m/E" is more accurately called an E major seventh chord, "Emaj7", and a "Bm/E" is just as equally named an "E7sus2". In the instrumental interlude, however, the chords change completely to A minor and B minor chords, leaving the E bass drone for a time before returning to E major.Pink Floyd: Anthology (1980 Warner Bros. Publications, Inc., Secaucus N.J.).
