Sounds heard at 30 minutes to go:
The band upstairs, riffing. A little country, a little blues, a little soul.
The house manager shouting "House open!"
Audience greeting each other in the Lounge, beer bottles being opened.
Actors warming up, practicing lines one final time. "Don't call me that! I really hate that voice!" "The Boogie Man! Boogie Boogie Boogie Man!"