Conductor Aaron Copland, left, looks on as conductor Mstislav Rostropovich gestures during a salute to Copland at the Kennedy Center for the Performing Arts in Washington, Nov. 14, 1980. Copland is celebrating his 80th birthday. (AP Photo/Ira Schwarz)

Conductor Aaron Copland, left, laughs as he watches conductor Mstislav Rostropovich during a salute to Copland at the Kennedy Center for the Performing Arts in Washington, Nov. 14, 1980. Copland is celebrating his 80th birthday. (AP Photo/Ira Schwarz)

Princess Grace of Monaco and her son Prince Albert, chat with Mstislav Rostropovich, center, during a party at New York's St. Regis Hotel, March 28, 1977. The party was held after Rostropovich, who celebrated his 50th birthday, made his conducting debut at New York's Carnegie Hall. (AP Photo)

U.S. Dept. of Transportation Secretary William T. Coleman Jr., right, and Michigan Gov. William G. Milliken, second from right, sit on the platform during Commencement ceremonies at Yale University in New Haven on Monday, May 17, 1976. Coleman and Milliken were among 11 awarded honorary degrees by the university at the ceremonies. Also in photo are cellist Mstislav Rostropovich, left, and cartoonist Garry Trudeau who were also awarded honorary degrees. (AP Photo/Bob Child)

Harvard University President Derek Bok, center front row, is seen posing with honorary degree recipients on June 14, 1974, in Cambridge, Mass. The recipients are in the back row from left: Jerome B. Wiesner, president of the Massachusetts Institue of Technology, Ralph Ellison, American novelist and educator, Mstislav Rostropovich, Russian cellist, Clifford Geertz, faculty member of the Institute of Advanced Study Princeton University, and Monsignor Rev. Helder Camara, Archbishop from Olinda and Recife, Brazil. Sitting in the front row are: on the left opera star Beverly Sills, Bok, and Chien Shiung Wu, professor of Columbia University New York. (AP Photo)