A 26-member, non-hierarchical improvising ensemble recorded live over three days in Le Volcan in April 2021, where individual instrumental voices — from saxophone and guitar to rotating surfaces and electronics — merge into a shifting mass of acoustic and electric event, preserving each performer's singular identity even as the group spins into turbulent collective invention.

A magnificent album of sound-oriented free improvisation from the French duo of Jean-Luc Petit on bass clarinet, alto saxophone and sopranino sax, and Benoit Kilian on the horizontal bass drum, a beast of an instrument that create massive tones over which Petit employs an incredible array of techniques and tones on his reeds, creating other-worldly sonic environments.