Are you aware that the New York Metropolitan Opera company have a global reach with their live HD-by-satellite ... delivered to a digital cinema screen in a town near you?
Rigoletto is appearing in HD at my local cinema tomorrow in what is described as "Live Opera in stunning high definition and Dolby Digital sound. A truly remarkable experience." It seems to be a pre-recorded Glyndbourne Royal Opera House production but should give me an idea of how well the cinema sound experience supports opera. To my amazement (and congratulations to those who have tickets) the entire Met season at my cinema has been completely sold out - I managed to get one of the last tickets.
I'll let you know what it was like. No need to dress up!