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FILE - Musical director of the Berlin opera house, Daniel Barenboim, left, kisses the Russian soprano Anna Netrebko during a press conference for the opera "Manon" in Berlin, Germany, on April 20, 2007. (AP Photo/Michael Sohn, File)
FILE - Musical director of the Berlin opera house, Daniel Barenboim, left, kisses the Russian soprano Anna Netrebko during a press conference for the opera "Manon" in Berlin, Germany, on April 20, 2007. (AP Photo/Michael Sohn, File)