La música de este albúm es una selección extraída de un concierto de 13 horas, realizado en el London Musician's Collective, los días 29 y 30 de Julio de 1978, en el marco del David Toop's Music/Context Festival.
Circadian Rhythm: Paul Burwell / Hugh Davies / Max Eastley / Paul Lovens / Paul Lytton / Annabel Nicolson / Evan Parker / David Toop
audio: http://www.mediafire.com/?t9whsxlngtq0v3u
Electronics [Live] – Hugh Davies
Flute, Flute [Alto], Recorder [Bass], Piccolo Flute, Performer [Home-made & Found Instruments] – David Toop
Percussion – Paul Burwell
Percussion, Electronics [Live] – Paul Lytton
Percussion, Saw [Sliding] – Paul Lovens
Performer [Charcoal, Sparks, Branches, Twigs, Fire, Pine Needles, Draughts, Smoke] – Annabel Nicolson
Performer [Self-designed Automatic Instruments And Other Small Home-made Instruments] – Max Eastley
Saxophone [Saxophones Etc.] – Evan Parker