Vienna – The singer, actor and cabaret artist Manfred O. diving died at the age of 77, like that Delivery man Referring to the artist’s family environment on Sunday. Diving became known primarily as the co-author of the “Watzmann” musical, which he wrote in the basic concept. With Joesi Prokopetz and Annette and Inga Humpe, he was responsible for the band German-Austrian sensitivity (DÖF), who celebrated great success in the 1980s.