VIDEO: The Inaugural Concert by Yo-Yo Ma , Itzhak Perlman , Anthony McGill & Gabriela Montero

What beautiful music it was. A piece written expressly for the inauguration by John Williams, "Air and Simple Gifts", it was performed live but not amplified, according to a report by HuffPost, the four musical geniuses played in time with their pre-recorded version of the piece because it was too cold out for their instruments to stay in tune. Anecdotally, the piece was based on an old Shaker hymn, "Simple Gifts". Enjoy.

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