Originally Posted by Brandon_Smith:
“Am actually astonished I have no idea what the audience or the judges were hearing but from my prespective it looked like he was jumping around on stage aimlessly wailing horrific vocals to backings of magnificent songs. Yet there were better acts who got nos? Like Emma Winter from last week who had a magnificent voice but a bad backing. I'm actually baffled?”
I reckon before each contestant goes on stage to audition, the stage manager briefs the judges beforehand so they know who is up next and what to expect.
The audience are probably briefed too, or during the audition they have a floor manager near the stage (out of shot of the cameras) holding up "CHEER" "LAUGH" "APPLAUSE" captions basically telling the audience what they're meant to be doing.
I'd love to be in the audience for BGT. If I spotted a camera on me whilst everyone else is cheering some garbage act, I'd be looking directly into the camera shruging my shoulders and mouthing the words "I don't know?".