Sylvain Blassel and Atelier XXème du Chapelle du conservatoire de Rennes, concert donné aux Champs Libres à Rennes le 7 décembre 2011. You can also hear Boulez doing this with the Ensemble Intercontemporain. This is for six players. It is a short work from 1984, about six minutes: the rest here is a concert lecture. It is Boulez at his most accessible. Dérive II, for eleven instruments, 1988, 2002, 2006, really is this length: it began short, but is now longer.