There is an atmosphere of shared experience at festivals that theatre only occasionally matches. I thought this while watching Beck at the recent Hyde Park festival.
To be fair, theatre makers probably do not always wish to engender this experience. Punchdrunk in eg Masque of the Red Death encourage you to create your own adventures and story throughout the evening.
Festivals do this too with the easier ‘framing device’ of live bands!
I wonder if groundling crowds at the Globe Theatre in Shakespeare’s time or watching a hanging brought humans together in this way, historically.
What place now football matches? There’s an amazing shared experience for fans in that – even rival ones.