Easy to do given the daft rules on pronouncing Y’s in Welsh.
Not daft, nothing like as daft as most of English.
Y as in the definite article is ‘uh’. That’s it. It varies with accent a bit, I think, but consistent with the same sound in all words, for example in Cardiff they might say it a bit like ‘er’ but then they also say ‘merm’ instead of ‘mum’.
The rules I read, and that seem to work:
– y and yr = uh
– single syllable word e.g. byd = ee
– multi syllable words = i or ee if it’s the last syllable, otherwise uh
So
mynydd = m uh n i th (as in the)
Penhydd = pen heethe
Pen y Fan = Pen uh Van
Coed y Brenin = Coyd uh Brenin