Phantom is still playing (http://www.burswood.com.au/Shows-and-Promotions/Promo/?promo_id=355) GO SEE IT. It's the longest running musical in history and one of 'the' musicals of all time (the other being Les Miserables). This is the first time it's been done in Australia since I was in high school (it's a huge, expensive production, it doesn't come around often) and even better it has Anthony Warlow in he title role who is widely acknowledged as the best Phantom ever on stage. GO SEE IT DO NOT MISS THIS OPPORTUNITY!

Symphonies: anything from the Late classical (Beethoven) onwards I think you'd enjoy. Opera can be an acquired taste but if there's a production of 'Carmen' by Bizet definitely worth that checking out.

(I'm probably going to spend far too much on arts stuff this year LOL. Ah Sydney)