Modern artist who belonged to the Fluxus group and is known for "Yoko Ono Piano Drop" and other works of performance art. His 1968 art collection, "Coco Was a Poco Loco about Cacao and Men," was displayed at New York's Museum of Modern Art.
He studied with avant-garde composer John Cage at New York City's New School for Social Research.
He became known for his sculptures and collages, as well as for his Happenings-style performance art.
His daughter, Bibbe Hansen, studied with Andy Warhol and became a prominent performance artist.
His grandson, Beck Hansen (better known by the stage name of Beck) had a successful career as an alternative rock musician.