It was primarily bassist Sébastien Beliah's idea to involve two of his most talented companions from the Umlaut collective (trumpeter Louis Laurain and saxophonist Pierre Borel) in this rich and unexpected encounter with Polish singer and percussionist Olga Koziek. Building its repertoire from the anonymous fund of old Polish folk tunes and altering their ancestral forms and rhythms with the sophisticated grammar of modern jazz, the quartet (whose name "Lumpeks" designates a second-hand clothes shop, in Polish slang ) has placed the principle of recycling at the center of its aesthetics. Transfigured by improvisations of great expressive freedom, the frenetic rhythms of the mazurkas and other traditional dances magically find a second youth and an unexpected topicality.

As a flagship member of a few groups which, in recent years, have made a lasting impression by opening up the young French jazz scene to forms, sounds and attitudes borrowed from noise music and punk (Radiation 10, Jean-Louis), trumpeter Aymeric Avice persists in this iconoclastic and subversive approach by offering with Pomme de terre a mutant trio of "raw" music (as one would speak of "raw art"), still determined not to yield anything of its libertarian aspirations. Accompanied by Niels Mestre's electric guitar and Étienne Ziemniak's drums, Aymeric Avice and his 'augmented' trumpet (transfigured by electronic effects) create a totally improvised organic music, based on rhythmic trance, explosions of energy and the tachist projection of sound textures of extraordinary density.