Has art boxed itself into a corner?

They’ve starved, stripped and suffocated. We’ve seen them sleep, do shopping and read out lists. Now, PJ Harvey wants us to watch her record a whole album while she sits in a big box. Time to pack in art’s most claustrophobic trend?“There was a funny moment when the door handle didn’t work properly,” recalls Ben Wright, lead singer of brutal death metal band Unfathomable Ruination. “There I was inside a metal box of about 1.6 metres squared with the band and our gear – and 40 min