I have absolutely no idea about Iceland I'm afraid
Well, I am writing in English.
Unfortunately, "English" isn't enough information for the best punctuation advice. It matters in which country you wish to be published.
Not the way it should be, but it is the way it is.
A song is an inanimate thing; it cannot say anything. I'd use as the song goes.... Also, I'd double check those lyrics (if it is a real song). I could not find the song via Googling lyrics and the words your quoted.
A song is an inanimate thing; it cannot say anything. I'd use as the song goes.... Also, I'd double check those lyrics (if it is a real song). I could not find the song via Googling lyrics and the words your quoted.
I think this is semantic hair splitting. Whether or not a song literally "says" something is irrelevant when we are talking about representing the way people actually express ideas. Plenty of idioms, and even more formal expressions, are not logical in a literal sense.
That wasn't what the OP asked about. ..and how do you know what vocabulary the character might use? It might be perfectly appropriate for him or her to use words imprecisely. It also might not be a song that exists in this world, for the abovementioned copyright issue.
No one pointed out what an agent or editor might criticize the OP about (or give reason to turn the work down).
No agent or editor worth the title is going to turn down a MS because of a small grammatical dispute.
If it is not the only problem, or just one of a few, small things, likely not. If either (or both) of the matters are part of a list where these tip it into the pass category, it's something to consider for the OP.