Archie Shepp and Joachim Kühn record a duet. The duet, an open form that gives each of the two musicians a lot of space, is a fragile art form. A certain kind of emulationâ??a challenge, some alchemyâ??has to be at work. Itâ??s a delicate balance, a delicate sound, a profound and intense dialogue between the intimacy of improvisation and the urgency of expression. -