photo: Gert Weigelt * note Hosted by the German embassy, celebrating 50 years of diplomatic relations with Israel,   'Ballet am Rhein Dusseldorf Duisburg' performed  A German Requiem, by Martin Schlapfer. The work, based on Johannes Brahms creation, enjoyed  large cast of about 40 well trained dancers, conveying Schlapfer's sensitivities. The tightly constructed requiem supplied a…