Recorded live at a concert held at the Sonja Henie Niels Onstad Center for the Arts, 28th April 1969 at Hovikodden, near Olso, Norway. The concert was sponsored by Ny Musikk, the Norwegian branch of the International Society for Contemporary Music.
A truly amazing album from start to finish. The line-up:
There was a second edition of this set, recorded in Milano 1980 with different players. That one's tasty, but this is earlier version is so SPECIAL!