I've been trying to improve my Japanese by memorizing songs I like. My current effort is 白虎野の娘 ("The Girl in Byakkoya") from the movie パプリカ.
The line at the end of the first full verse has me confused. Most sites I've found the lyrics on have it like this:
...with the English translation:
Someone whose name I don't know appeared on the high ground and its moving
("And its moving" doesn't really make sense and I don't see anything like "moving" in that line, but anyway...)
In searching around and trying to understand this line I happened across an alternate rendering offered by a smaller number of sources:
...which one site translates:
Then you find a nameless and nostalgic field on a hill.
Not only does that make more sense, but if I listen carefully to the singer (for example here around 1:02) it sounds like ひろの, not ひと with an extended final vowel as I originally assumed.
The problem now is that I can only find that 広野 meaning "field" or "plain" should be read with its on-reading こうや, not its kun-reading ひろの, which only seems to applicable to names of people or places. I couldn't find a single source which suggested otherwise.
My best guess is that kanji can perhaps be read using whichever reading one wants if it makes a poem or song scan better. Is that what's happening here? If not, what's going on?
Bonus sub-question: How is it that the word for "unknown" is 知らぬ instead of 知らない? I have the impression from watching various shows that ね can be used in place of ない at the end of a negative, but ぬ is totally new to me.