sentences:  In 1999, the symposium was renamed the John Donald Robb Composers' Symposium.The symposium is now presented jointly by the Trust and the UNM Department of Music.Included among the many distinguished guests have been Milton Babbitt, John Cage, Raven Chacon, Michael Colgrass, George Crumb, Joseph Daley, Julio Estrada, Lukas Foss, Alan Hovhaness, Karel Husa, Betsy Jolas, Ernst Krenek, John Lewis, Gordon Mumma, Thea Musgrave, Pauline Oliveros, Hilda Paredes, Vincent Persichetti, Ned Rorem, Joan Tower, Cecil Taylor, August Read Thomas, Hans Tutschku, Hildegard Westerkamp, Christian Wolff, and Chen Yi.