Splott Man:
I always remember it as "Don't stop breathing OR you'll die".

And "Bread from Evan's
Bread from Evan's,
Beer from The Colliers' Arms
Beer from The Colliers' Arms"

The Repetition of the first line matches more closely the original hymn(English version), and "the Tredegar Arms" would seem to put the stress on the wrong syllable.

Iechyd Dda
Nigel