Yo-Yo Ma and pianist Cristina Pato perform during Ma's Nancy Hanks Lecture on Arts and Public Policy at Washington, D.C.'s Kennedy Center. David Hathcox/Americans for the Arts hide caption

itoggle caption David Hathcox/Americans for the Arts

Yo-Yo Ma offered a graciously warm performance of Tchaikovsky's Andante Cantabile for cello and strings with student musicians. Hilary Scott/courtesy of the Boston Symphony Orchestra hide caption

itoggle caption Hilary Scott/courtesy of the Boston Symphony Orchestra