The first three tracks are serene, gentle tape-looped guitar textures performed by Robert Fripp and accented with treatments, synthesizer and piano by Brian Eno.
Track four, "Wind on Wind", is an excerpt from Eno’s solo project Discreet Music, which was released after this album. Eno had originally intended Fripp to use the material which became Discreet Music as a backing tape to play over in improvised live performances.
The second half of the album is a twenty-eight-minute piece of drone music titled "An Index of Metals", in which guitar notes are accumulated in a loop, with distortion increasing as the track progresses.
This album's recording and the preceding seven show European tour by the duo marked Fripp's first output after disbanding King Crimson and his last before temporarily retiring from music (at the time thought to be permanently) to study at the International Academy for Continuous Education in Sherborne House. Evening Star is the only Fripp album to be released during his retirement.