 In 1985, Pifarély started to work with reedist Louis Sclavis and in 1992, they formed the Sclavis/Pifarély Acoustic Quartet, featuring guitarist Marc Ducret and bassist Bruno Chevillon, and recorded for ECM.In the late 1990s, he started a duo work with pianist François Couturier, and they recorded an album (Poros, ECM, 1997).Impromptu is a collaboration with François Couturier, Dominique Visse, and a work on contemporary poetry.