FILE - Soprano Anna Netrebko attends a news conference on the premiere of Manon Lescaut in the Bolshoi Theater in Moscow, Russia on Oct. 14, 2016. Netrebko is scheduled to give a recital at the Palm Beach Opera for its gala on Feb. 3 in what would be her first U.S. appearance in six years. (AP Photo/Alexander Zemlianichenko, File) FILE PHOTO
