This week I got too sick to sing at church on Sunday, and it got me thinking. When I travel, I often get sick, and traveling and singing is pretty much what touring musicians do. So either they've got better infection control than me, or they know how to take better care of their voices. Probably a combination of the two. It's got to be a big deal for a singer to get sick on tour, because they don't exactly have an understudy they can send on for the night while they recover.
Mokalus of Borg
PS - Deb suggests that they might just lip-sync for a while.
PPS - But those kinds of singers are probably doing that without being sick.