“On Wednesday, selected singers, orchestra members and various technicians” at Cagliari’s Teatro Lirico (a high-tech hotbed, in fact) will perform Puccini’s Turandot “wearing Google Glass to transmit the opera live from their individual points of view to audiences online. … Live links through the opera’s website, Facebook, and other social media will allow at-home opera aficionados to enjoy – and interact with – the company.”