Improvisation 1 (20.25), Improvisation 2 (05.40), Improvisation 3 (11.47), Improvisation 4 (05.12).
Recorded live at the ICA London on 2 September 1970 (not 'August 1970' as on LP' - later corrected by Martin Davidson).
Improvisation 5 (05.57), Improvisation 6 (10.37), Improvisation 7 (04.29), Improvisation 8 (06.22), Improvisation 9 (03.38), Improvisation 10 (03.10), Improvisation 11 (07.35).
Recorded in London, 3 May 1972 (precise date provided by Martin Davidson).
Re-released on 3CD set in February 2000 with additional material on Emanem 4301.