On the subject of different words for the same tune, I recall many years ago attending a "Rememberance Sunday" service (nearest Sunday to Nov 11th), at which one or two of the parishoners nearly had fits. One of the hymns chosen was "Glorious Things of Thee Are Spoken" to the tune "Austria"; Unfortunately "Austria" is also the tune to "Deutcherleid" (have I spelt that properly?) aka "Deutchland Uber Alles" - Not the best choice for that particular day.

Regards

Walrus