This chapter follows up on Chapter 3 by presenting nine portraits of works for multiple orchestras or for an orchestra divided into spatialized groups composed, premiered or reprised between 1958 and 1978 by Henry Brant, Henri Dutilleux, Gunther Schuller, Luigi Nono, Toshiro Mayuzumi, Gilles Tremblay, Harry Somers, Charles Ives and Anthony Braxton. These works were premiered in New York, Boston, Paris, Darmstadt, Toronto and Tokyo. The common features of these works invite their being studied as a group, focusing on the ways composers and critics characterized these works premiered in the heyday of both post-war avant-gardism and the public dissemination of stereo hi-fis, thereby creating points of contact with the works discussed in the previous chapter.