Some of you missed the point. There's no way I can talk about the upcoming song while tuning (and BTW I play guitar, should you be wondering.) I just can't. Yes, of course I tune before I begin a set; but some hard hammering sometimes stretches a string a wee bit or else the heat from the audience or even from my own arm can cause some changes. And yes, I do have a clip on tuner. You'd think that would solve the problem, but it doesn't. What I think I need is what some have shared: a short line or two that I can say almost without thought. I may be wrong but I believe by saying something such has been suggested above I can more or less include the audience in the process.