Congrats!
Break a leg! (or a lung! - since it's an opera!)
I worked for almost 15 years professionally as a designer, stage manager, sound engineer and technician on all kinds of shows, theatre, dance, opera and so many more before the accident, and I'm not able to do it yet. I miss it. A. LOT. I'm really glad you posted this! It gives me hope I'll be able to do it again someday.