In this handout photo provided by the San Francisco Opera, Reneé Tatum, Lauren McNeese and Melody Moore as The Three Ladies and Alek Shrader as Tamino, are shown during a scene from the final dress rehearsal of 'The Magic Flute'(AP Photo/San Francisco OIn this handout photo provided by the San Francisco Opera, Albina Shagimuratova as The Queen of the Night, and Heidi Stober as Pamina are shown during a scene from the final dress rehearsal of 'The Magic Flute'(AP Photo/San Francisco Opera, Cory Weaver)In this handout photo Ferruccio Furlanetto as Attila is shown during a scene from the final dress rehearsal of 'Attila'(AP Photo/San Francisco Opera, Cory Weaver, handout).In this handout photo Lucrecia Garcia as Odabella and Ferruccio Furlanetto as Attila are shown during a scene from the final dress rehearsal of 'Attila' (AP Photo/San Francisco Opera, Cory Weaver, handout)In this handout photo Quinn Kelsey as Ezio and Ferruccio Furlanetto as Attila, right, are shown during a scene from the final dress rehearsal of 'Attila' (AP Photo/San Francisco Opera, Cory Weaver).In this handout photo provided by the San Francisco Opera, Chen-Ye Yuan, as Chou En-lai, from left, Maria Kanyova, as Pat Nixon, and Brian Mulligan, as Richard Nixon, are shown during a scene from the final dress rehearsal of 'Nixon in China'(AP Photo/SIn this handout photo provided by the San Francisco Opera, Simon O’Neill, as Mao Tse-tung, foreground, is shown with his three secretaries—Ginger Costa Jackson, from left, Buffy Baggott and Nicole Birkland, during a scene from the final dress rehearsal ofIn this handout photo provided by the San Francisco Opera, Hye Jung Lee, as Madame Mao, sings 'I am the Wife of Mao Tse-tung' during a scene from the final dress rehearsal of 'Nixon in China' (AP Photo/San Francisco Opera, Cory Weaver, handout)