From a Guardian report from Berlin:
…Lothar Wieler, the head of the German government’s disease control agency, the Robert Koch Institute, specifically warned on Tuesday that singing was ill-advised. “Evidence shows that during singing, the virus drops appear to fly particularly far,” he said.
Virologists also believe singers could absorb many more particles as they tend to breathe deeper into their diaphragms than they would during normal breathing.
A draft bans both communal singing and wind instruments from services over the “amplified precipitation of potentially infectious drops” …
Read on here.