Recently I asked Welsh speakers to provide a phonetic version of the lullaby "Huna Blentyn." So far I have three versions and they accord pretty well. Thanks to their help, the job is 93% done.

However, I have three forms - heena, hinna, and huna for "Huna." Which should I use?

For anharu'th, two people say an-hareeth and one calls for a short u in the last syllable. Which should I use.

How should the vowels in "gyntyn" be pronounced?

Another sticky wicket is the line "Ni wna undyn a thi gam." It doesn't fit the notes. What do you think of the phonetic version "newn na een-deen ah thee gahm?" Obviously, it runs the words ni and wna together. Is that acceptable?