Improvisie is a live album by "Paul Bley" with Annette Peacock and Han Bennink which was released on the French America label in 1971.
There are two pieces on the set, the elegiac title cut, which is nearly 14 minutes in length, and the much more adventurous "Touching," which is nearly 24. On "Improvisie," elements of jazz phrasing and harmony usher in the piece haltingly, purposefully, almost reverently... Even 35 years later, "Touching" is still a brave and uncompromising work, one that asks as many questions as it answers, and one that renews its freshness with each repeated listening".
I recommend to listen it with headphones, and with all your senses plugged in. For experimentalism lovers.