If you enjoy singing classical music the identity crisis comes from the fact that a lot of the music is Christian. Personally I am atheist. Worse than that, are all the Requiems. I realise that I'm definitely a Protestant Atheist.
But we only have to sing it, not believe it.
When younger I used to enjoy Irish Set Dancing, but the Irish club we went to, while not turning us away, is very Irish and Catholic. (In England)