“Music with Roots in the Aether” is a series of interviews with seven composers who seemed to me when I conceived the piece-and who still seem to me twenty-five years later-to be among the most important, influential and active members of the so-called avant-garde movement in American music, a movement that had its origins in the work of and in the stories about composers who started hearing things in a new way at least fifty years ago. 240 pages, paperback.