Even a superstar is not immune to Corona – Wincent Weiss was actually supposed to sing in front of tens of thousands of visitors at the CHIO Aachen Opening Ceremony tonight, but at short notice he now had to inform the organizers that both he and parts of the crew have fallen ill. “We are working flat out to find a great solution for tonight,” said CHIO Aachen Sports Director Birgit Rosenberg, who is also responsible for the shows.