"On Ilkley Moor ba t'at" hardly counts as "disreputable" in any sane mind.

An army chaplain told me once that My Darling Clementine tended to be used by soldiers for any hymn tune that sounded vaguely like it, and he use to welcome that because it meant they weren't shy about joining in. I imagine it's probably a hymn tune previously in any case - it's got that kind of feel.