Input (grade 13): He performed John Williams' "Air and Simple Gifts" at the 2009 inauguration ceremony for Barack Obama, along with Yo-Yo Ma (cello), Gabriela Montero (piano) and Anthony McGill (clarinet).
Output (grade 9): Perlman performed at Barack Obama's presidential inauguration. He joined cellist Yo-Yo Ma, pianist Gabriela Montero and clarinetist Anthony McGill.