Back in the original London version they had a song called the ballad of billy Mccaw which got replaced by that italian aria in growltiger's last stand
I will miss growltiger dearly but am interested to see what it has been replaced by, I see the actor in the playbill now is credited as a character called "Peter" as well as Gus and Bustopher so I am curious to see what thats all about
regarding the set, what was said earlier about the roof being opened up sounds very interesting, I;d love to hear more about this.
Having only ever seen the london production, they were in a modern theatre that was very flexible (I guess you could compare it to something like the Gershwin or Circle in the Square. They took out the proscenium (like they can do in the Gershwin, and the set was in the round with rows of seating in the balcony basically going into what would usually be backstage. The stage also rotated, pointless but a cool effect at the time, particularly if you were sitting in the rows that moved.
as for the roof, being that the theatre didnt have anything special about its roof (modern so think of the Marquis) they had fibre optic strands all over the roof that would twinkle like stars and also glow different colours which was very pretty to see (in addition to the 'christmas lights' all over)
Perhaps (asside from no pirate ship, just a matress and some cat foot shaped footlights in growltiger) the other dissapointing bit of set was the whole heaviside lair thing, the wall above the moon just had a basic ladder come out of it with some rainbow lights shining through the hole, nothing fancy like what they used in the DVD
http://www.flickr.com/photos/27199361@N08/ Phantom at the Royal Empire Theatre