There is a derivative of this beautiful stirring song, to an entirely differnet tune, which I learnt at school over 50 years ago. The only part I can now remember is [and my apologies to Welsh people for the spelling, which has become faded with the years]:

.... moog a prentrefef....gavydd gwyn gaggard

attenfa mafgen croes dwylad

If any readers know of all the words [properly spelt}, or where i could find them, I'd be very grateful. I do know that the late Ivor Emmanuel recorded this version on tape some years ago...and I think the title may have been "Cambria"

John Mathews

[john.mathews@hotmail.co.uk]