Not sure if this pic ever made it to this blog or not.  This was a vocal performance down town in Balt at MAP for an art opening a while back.  That poor audience, they didn't know what to do!  Hahaha, I could see them just staring and keeping their distance.  By the third song they seemed less shocked and didn't bother moving back, out of reach.  Probably the audience is never considering how they look to the performers.