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"Duets" is the fourth episode of the second season of the American television series Glee, and the twenty-sixth episode overall. It was written by series creator Ian Brennan, directed by Eric Stoltz, and premiered on Fox on October 12, 2010. The episode featured seven cover versions, including a mash-up of "Happy Days Are Here Again" and "Get Happy" by Barbra Streisand and Judy Garland, respectively.