Contemporary artist who belonged to the Fluxus group and is well known for “Yoko Ono Piano Drop” and additional works of performance art. His 1968 artwork collection, “Coco Was a Poco Loco about Cacao and Males,” was shown at New York’s Museum of Contemporary Art. He researched with avant-garde composer John Cage at NY City’s New College for Social Study. He became known for his sculptures and collages, aswell for his Happenings-style efficiency art. His girl, Bibbe Hansen, researched with Andy Warhol and became a prominent efficiency designer. His grandson, Beck Hansen (better known from the stage name of Beck) got a successful profession alternatively rock musician.