Input (grade 11): Air and Simple Gifts, performed by Itzhak Perlman on violin, Yo-Yo Ma on cello, Gabriela Montero on piano, and Anthony McGill on clarinet.
Output (grade 12): It was performed by four musicians: the violinist Itzhak Perlman, the cellist Yo-Yo Ma, the clarinetist Anthony McGill and the pianist Gabriela Montero.