If the booker wants only strictly trad music in their club - well that's their decision. But I believe musicians should play whatever they whatever the heck they play. People will like it if it's good music. It's one thing to love and honour music traditions, but it's my belief that anyone can take those anywhere and anyway they want. We are an evolutionary species. Trad music came from somewhere - and all those songs and tunes were brand new once. In the grand scheme it doesn't pay to stick your head in the mud - move forward!!!!!!!