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.

This single extended performance brings together a collective of improvisers playing low range instruments in order to build an acoustic sonic sculpture, from the quintet of Daunik Lazro on baritone saxophone, Jouk Minor on contrabass sarrusophone, Thierry Madiot on bass trombone & telescopic tubes, and both David Chiesa and Louis-Michel Marion on 5-string double bass.