Chamber, Quartets, String Quartets, Xenakis (composer)

Claude Helffer (piano), Rohan De Saram (cello), Garth Knox (viola), Irvine Arditti (violin) Arditti String Quartet

Arditti Quartet, Claude Helffer (piano), Rohan de Saram (cello), Garth Knox (viola), Irvine Arditti (violin)

Quartetto Danel

The JACK Quartet

Benedikta Bonitz (tenor recorder), Stoyan Pavlov (khanjari), Christo Tanev (cello), Angela Tosheva (piano), Ventzislav Kindalov (bass recorder), Benedikta Bonitz (recorder), Stoyan Pavlov (triangle), Benedikta Bonitz (alto recorder), Stoyan Pavlov (khandjari), Laurentius Bonitz (violin), Tor Røynesdal (viola), Richard N. Eade (cello), Benedikta Bonitz (recorders), Stoyan Pavlov (triangles) Panorma Quartet

Huseyin Sermet (piano), Regis Pasquier (violin), Gustav Schmaht (violin), Manfred Reinelt (piano), Hannelore Kuhse (soprano), Marja Bon (piano), Ursula Oppens (piano), Joelle Leandre (tape), Claude Helffer (piano), Maryonne le Dizes-Richard (violin) Novak Quartet, Leipzig Gewandhaus Orchestra, French National Orchestra, Radio France Philharmonic Orchestra, Budapest Symphony Orchestra, Bordeaux Aquitaine National Orchestra, Dresden Philharmonic Orchestra, Berlin Symphony Orchestra, Leipzig Radio Symph, Vaclav Neumann, Charles Munch, Pierre Bartholomee, Erich Bergel, Alain Lombard, Kurt Masur, Gunther Herbig, Herbert Kegel, Pierre Boulez, Reinbert de Leeuw, Lorraine Vaillancourt, David Robertson

Vegh Quartet, LaSalle Quartet & Kronos Quartet

The JACK Quartet

Hamburger Kammersolisten, Quatuor Parrenin, Hamann Quartett, Quartetto di Nuova Musica, New York String Quartet & Internationales Kranichsteiner Kammerensemble, Bruno Maderna & Francis Travis