Opera continues to break records with this weekend’s ratings of Verdi’s “Aida.” According to ORF, the TV screening of “Aida” from the Salzburg Festival took a 17 percent market share this weekend. The reports noted that there were an estimated 473,000 viewers. The production starred reigning diva Anna Netrebko, Francesco Meli, Ekaterina Semenchuk and Luca Salsi.  Riccardo Muti conducted the Vienna Philharmonic {…}