My church choir obviously can’t rehearse and can’t sing during services. We aren’t even holding normal services. We are streaming them. The rector, the organist, one singer, and an IT guy all come together but stay 10 feet apart. We go through the service and the singer does one hymn and one anthem. It’s strange but we know our parishioners appreciate it. For Easter we are going to expand a little bit and have 4 singers at four corners of the church and some brass.