My brain is actually short-circuiting.
In 2017, Sain Records, yes that Sain, founded by Dafydd Iwan and Huw Jones in the 60s because travelling down to London to record a song was just too much of a bother so the preferable alternative was to set up a record label and eventually a studio of the same name in Wales, which went on to be the label of the protest folk singers of the 60s and then branched off into being one of the major labels putting out and promoting independent and alternative Welsh and especially Welsh-language acts in the 70s and 80s, with its own subsidiary Crai being a big label that a gave an early push to a lot of the 90s Welsh alt rock bands like Catatonia, Gorky's, Super Furries and their previous bands like U-Thant and Ffa Coffi Pawb, Big Leaves, Topper; even popular 80s bands like Y Trwynau Coch and Yr Anhrefn, Llwybr Llaethog recorded** on Sain or a subsidiary like Crai or Rasal Cyf.
**I might be getting some of these wrong, I'll check later
That Sain Records, they made about 7,000 recordings from their archives available in the Wikimedia commons. I'm going to have a field day going through them.
Through a cursory scroll I have seen a lot of male voice choirs (which I am not surprised by, but I didn't know Sain recorded them as much), but I know I'll find something up my alley. I know I will.
----------
Well there we are! I have to update this post before even hitting publish! I've already found this:
I don't know what band it is, but the Meirion name sounds familiar. I can't tell at this hour though. But yeah, Hey, Ti'n Cwl! [Hey, You're Cool!] The record does seem to fit the time!