For me, at least:
Itzhak Pearlman (Violin), Anthony McGill (Clarinet), Yo Yo Ma (Cello), and Gabriela Montero (Piano) perform "Air & Simple Gifts" at the Obama Presidential Inauguration Ceremony (20 Jan. 2009).I'll note that "Simple Gifts" is already one of my favorite pieces of music, and this arrangement, with the clarinet bringing out the melody, is one of the finest I've heard. In addition, it's fun just to watch the sheer joy on Yo Yo Ma's face as he plays. In the midst of this performance, the clock struck noon and Obama officially became president.
Music arranged especially for the inauguration performance by John Williams.