Six dynamite in-the-moment improvisations by some of the most extraordinary artists of modern music four separate concerts recorded from 1978 to 1983: Improvisation 1 The Odean Pope Trio Odean Pope, tenor saxophone; Gerald Veasley, bass; Cornell Rochester, drums. Improvisation 2 The Peter Brotzmann Trio - Peter Brotzmann, tenor saxophone; Harry Miller, bass; Louis Moholo, drums. Improvisation 3 & 4 Ed Blackwell, drums; Charles Brackeen, tenor saxophone. Improvisation 5 & 6 Don Cherry, stalagmites (5); flute (6) !!! These last two extraordinary improvs were done on location in Mammoth Cave in Kentucky!! Check out the late, great Mr. Cherry on the cover in his spelunker's outfit!