What does it mean? Does it matter?
Sing it out, loud and clear, with a group of singers from Bangor, North Wales.
Meredydd Evans introduces Ivor Emmanuel, Margaret Williams, Olwen Jones, Eiri Jones, Caryl Owens, Ryan Davies, David Reynolds, Jim Howells, Justin Smith, Aled Hughes, Reg Edwards, Derek Boote and The Proclaimers.
Joining in the fun are some young people from Anglesey and Caernarvonshire.