‘Glastonbury is a work of art. It is a masterpiece’

The Guardian’s art critic goes to Glastonbury for the first time since 1984 and finds Hieronymus Bosch’s Garden of Earthly Delights has come to life. Did the festival free his mind – or make him lose it?It was the night the music died. I was 19 and had come to the Glastonbury festival with my girlfriend. We were looking forward to 1984’s headline act the Smiths. But then it rained. Quite a lot.The sky was thunderous, the lanes turning to rivers of mud. We hiked miles into the campsite, i