Advertisement'The Most Beautiful Offerings': Terry Riley At 80June 19, 2015Anastasia TsioulcasfacebookEmailComposer 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. (Courtesy of Kronos Quartet)