As I in no way shape or form (or sound) know much about sound/audio/mics, I thought I'd direct my question here. We have a show that went up yesterday, and I just realized, all of their wired mics are SM81s. And we tend to use them anytime something nice is going up. I just realized though, these are instrumental mics. Does it make that much of a difference? They were having a lot of trouble with some of those wired mics last night. They couldn't tell if the mics had been damaged, the cable/connectors/etc. had been damaged, if the placement was wrong, or if the kids weren't speaking it the mic or projecting enough. I was curious if an instrumental mic should ever be used for singing. Also if there are any problems I can look for with their (our) current audio set-up. Thanks (P.S. I am still trying to get them to use over the ear or hairline wireless mic placement, as on the costume has not worked out well.