Just came back from Ireland, and visited the Meeting of the Waters. Ah, jes' luvlee, folks!

I take it you're looking for English-language songs? Took me a minute to work out that the English Ash Grove would fall into that category, where the Welsh wouldn't. Conversely, I was going to suggest "Ar hyd y Nos - All through the night" but I'm pretty sure that, although the Welsh words are spot-on, the English are ... a lullaby? Pity.

And, this won't be any more help but ... there's a Welsh song, Moliannwn, which is standard rip-snortin' sing-along stuff over here ... but was originally a Minstrel Show piece - all about winter being over, spring springing, lambs prancing, ... I think it was done by the Christy Minstrels (?) in 19th C. I'll see if I can find any refs: for it as it might be a nice change of pace ...

sian