This weekend a number of companies will remain on holiday breaks while many major theaters will feature great opera and great singers such as Juan Diego Florez, Brian Jagde, Renee Fleming and Marco Berti. Austria Strauss’ “Die Fledermaus” will be performed at the Vienna State Opera on Friday evening followed by Bellini’s “La Sonnambula” starring OperaWire Artist of the Week Daniela Fally {…}