Elwira Slazak et Gabriel Collet sont des percussionnistes polonais-français - des musiciens de formation classique - spécialisés dans les duos Marimba. Leur parcours musical a commencé avec la musique contemporaine. Très tôt, ils ont commencé à collaborer avec des compositeurs émergents, créant un nouveau répertoire. Through their own musical language they perform a repertoire mostly consisting of compositions and arrangements written by Gabriel Collet, specifically for the duo.
In addition to their concert activities, the duo writes soundtracks for documentaries and works with different musicians, singers, dancers and painters. Fully committed to contemporary music, they have made many first performances of new pieces, some of which have been dedicated to them.