Don't box me in: why label art forms?

Stage | guardian.co.uk: Over the last couple of weeks, I've been to Wales to see Tir Sir Gar, which was as much tea party and installation as theatre, and Praxis Makes Perfect, as much immersive pop gig as immersive theatre. I saw Hofesh Shechter's brilliant early works Uprising and the Art of Not Looking Back – quite clearly dance pieces. Or were they? Much of the choreographic language would be both familiar and thrilling to anyone interested in contemporary experimental theatre.