He upended theatrical norms with his own stunningly visualized works and his collaborations with a wide range of artists, from Philip Glass (“Einstein on the Beach”) to Lady Gaga.

Robert Wilson, a leader in avant-garde theater who collaborated with Philip Glass, David Byrne and Lady Gaga over his six-decade career, has died. He was 83.

Robert Wilson, a playwright and artist who cultivated a loyal following in the art world for spare productions that bridged the gap between performance art and theater, died on Thursday in Water Mill,