Upe is the result of a composition commissioned by the Ensemble Contrechamps from the group Massicot for a joint event with the Ensemble Vide. The creative process involved a dialogue with the musicians of Contrechamps and a work of accompaniment and translation by Louis Schild. The trio shared the stage of the magnificent Arcoop building (built in 1959 by Honegger Frères) - a favourite venue for Ensemble Vide's projects - with fourteen string instruments.

The rain pounding on the corrugated roof of the Carouge industrial liner brought a spontaneous touch to this live recording. The B side sketches the process of creating Massicot - a midi version of the composition. La Cave12 joined the project for the edition of this record, witness of a unique evening.