An album of intensive listening through concentrated improvisation from the long-running collaboration of French improvisers, Cyprien Busolini on viola and Bertrand Gauguet on alto saxophone, both using unfaltering techniques as they metamorphose their instruments from delicate silence to forceful tones, oscillating and vacillating across two extended improvisations.

Two concert recordings between alto saxophonist Bertrand Gauget and pianist John Tilbury, one at Eglise Saint Maximin, in Metz, France in 2016 and the other at Festival Paysages d'écoute at Les Quinconces, France in 2019, leveraging the natural resonance of both spaces as they perform with concentrative pacing using advanced techniques to create drama and intensity.

Using the interference points of closely pitched sound, long-time collaborators Xavier Charles and Bertrand Gauguet use acoustic and amplified clarinets and saxophones to create frequency landscapes that change slowly, ringing with harmonics while finding unison and conflict in their tones, creating meditative aural environments of great beauty and reflection.