A first encounter between Swiss drummer Fritz Hauser and Portuguese marimba master Pedro Carneiro, the title translating roughly to "step of two", implying a dance heard in elusively minimal yet highly active interactions between the two, each progressively numbered work borrowing from improvisational and contemporary approaches; fascinatingly sophisticated and often joyful work.

The quartet of Sergio Armaroli (vibraphone), Martina Brodbeck (cello), Francesca Gemmo (piano), and Fritz Hauser (drums & percussion), also heard in free improvisational duos and trios, perform Armaroli's "Structuring the Silence", aiming to extend the performers' improvisational freedom using time and space through broad compositional instructions.

Recorded live in 2004, Quartet Noir unites Urs Leimgruber, Marilyn Crispell, Joelle Leandre, and Fritz Hauser in deep long-form improvisations, where vivid detail and patient interaction shape evolving structures, balancing unpredictability with a cohesive, resonant group sound born of longstanding collaboration.