It's all theatre. No, wait, it's musical comedy. "Theatre" would encompass the likes of the Fall of the House of Atreus, but that's some serious shit that carries with it an implication that there's somebody around who cares. Instead, what we have here are some third-rate song-and-dance men, a wink-wink/nudge-nudge plot, and some glib patter laid atop a catchy tune.
... The cowboys, the wrestlers, the tumblers, the clownsGets your feet tapping, don't it? Makes you want to dance. Makes you want to go into the show business!
The roustabouts that move the show at dawn
The music, the spotlights, the people, the towns
Your baggage with the labels pasted on
The sawdust and the horses and the smell
The towel you've taken from the last hotel
There's no business like show business ...
Come on, everybody, sing along with me!