I think I know the answer to this-but I can always learn more, so I will ask. My music director insists that I mark a "solo" level on the board, so that anytime we have a group singing, and someone breaks in on a solo , their volume will be where it needs to be. We are traditional-no band, usually piano, occasionally accompanied by a guitar. The obvious answer would be a mic check before every service, but this is not feasible do to schedules (real issues not convenience), plus our pastor has a tendency to change the service schedule during the service, so I have worked hard to be able to learn our singers well enough that I can usually get a reasonable mix on the first note, no matter who is singing with who, but it is obviously never perfect (is it ever perfect?). Is it just me, or are there not too many variables from service to service, just to be able to run everything "by the numbers"? We run around 500 in the service, I mix on an A & H GL3800, and I have mixed here for 16 years-just to give you an idea of my situation.