I think people need to speak up and not silently ....have a shet of paper and give to new people saying this is what we prefer...if you prefer something else say so. If you do nt want someone to play or sing along, say so. And don't say we welcome everything and then cringe when they sing today while the blossoms still cling to the vine. Be honest. So f you are trying to preserve a tradition say so. Newcomers will not know unless you tell them. If you love the blue books and started he group to use them as so. People can decide from there..