Gunther Schuller, shown conducting Charles Mingus's Epitaph in 2007, was a Pulitzer Prize-winning composer, conductor and educator. He died Sunday at age 89. Hiroyuki Ito/Getty Images hide caption

itoggle caption Hiroyuki Ito/Getty Images

Composer Terry Riley (center) celebrates his 50th birthday in 1985 with his muses in the Kronos Quartet (from left) David Harrington, John Sherba, Hank Dutt and Joan Jeanrenaud. Richard McCaffrey/Courtesy of Kronos Quartet hide caption

itoggle caption Richard McCaffrey/Courtesy of Kronos Quartet

Violinist Hilary Hahn. Michael Patrick O'Leary/Courtesy of the artist hide caption

itoggle caption Michael Patrick O'Leary/Courtesy of the artist