Have you considered doing a Winter concert without making it all about Christmas?

There's plenty of other choices of music. Furthermore, there are dozens of "Christmas" songs that have nothing at all to do with Christmas.

Frosty the Snowman, Jingle Bells - neither has a single thing to do with anything other than winter as a whole.

Secondly, is it celebration of Christmas that they don't allow, or public hymns? If it's just the first, that opens up a whole world of other possibilities.

Finally - where are these communities with huge JW populations? I've never known another faith to prohibit holiday celebrations like that. Where in Texas does this actually happen?