Oh dear, I shall expose myself (no not that way!) I don't get at all nervous now, comfortable with the material, comfortable with the "boys", I do glow pink when I hit bum notes but i try not to worry about it, I can only think of one occasion this year when I didn't hit a bum note during a set, so I had a permanant rosy glow! and only the real pedants notice anyway, by and large people don't notice. One of the secrets of performing is getting eye contact with as much of the audience as possible, keep scanning and smiling, act confident that way you will be forgiven the odd indescretion. Our rehersals are spent sitting in someones kitchen, drinking wine, munching nibbles, discussing arrangements, and some times singing a song all the way through and sometimes line by line and when we perform we just carry that informal atmosphere with us. It hasn't always been like that, i suppose it is an age thing.