<HTML>Terry You are worrying yourself to death about nothing. Yes, it is a "concert," and you should do the best you can. But under the circumstances, and not to down grade your ability, but I doubt very much if the pianist, much less the audience, will hear if your unisons aren't perfect, much less if your thirds aren't progressing. Do what you can, use what ever method you use under normal circumstances, and have fun. Hey, maybe you'll even see some of those flashers. Willem </HTML>