I hear you.
I know you didn't ask, but I'm not sure it's safe to go singing in an enclosed space. The 5 day self isolation is for economics, not health. If you knew you were getting other people sick who would get other people sick, would you still do it? No need to answer me, I was just kind of wide-eyed when you said you were going to go be in a musical 5-6 days after you first got sick.