This is about the construction of the title of the popular German Christmas song: "Süßer die Glocken nie klingen."
My understanding is that the verb is supposed to go into the second position in most sentences. That might imply a construction like Süßer klingen die Glocken nie, or Die Glocken nie klingen Süßer.
Normally, when the verb is at the end, it is because of a so-called "relative pronoun," such as wer or was. But I don't see "Süßer" as performing that function.
What is the rationale for the construction, "Süßer die Glocken nie klingen?" Is it a "standard" construction using a formula I've missed, or is a form of "poetic license" that violates ordinary grammar rules?