Watch Josh Groban and cast of ‘Great Comet of 1812’ perform live on TODAY

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Best of Broadway week on TODAY concludes with the cast of “Natasha, Pierre and the Great Comet of 1812,” the new musical inspired by a portion of “War and Peace.” Josh Groban, who plays Pierre, tells Hoda Kotb about the show and joins the cast in a live plaza performance of the rousing number “Balaga.”