Judy,
I am curious, when you sing it, do you have to resolve (in your mind at least) the lexical uncertainties, or does the feeling of the whole song mean that singer and audience don't need complete clarity of meaning for some of those dialect phrases?

By the way, this question doesn't imply any kind of criticism or judgement, just sincere curiosity --which is informed by a great appreciation for the way even singing in an entirely foreign language can be powerful and moving.

thanks.