Udo Jürgens was a performer who preferred to let his voice carry the show. The intense young man playing a piano in an empty stadium in the ‘60s (“Was ich dir sagen will”) burned with a visible sincerity he never lost in all his time as Austria's premier dapper crooner, whether dressed in a ‘70s cravat (“Griechischer Wein”) or the trademark immaculate dark suit of his later years.