When I’m writing a song, if I don’t finish it all in one sitting, I like to at least have a chorus written—whether it’s a verse and a chorus, or a chorus with no verse(s), or a chorus and a bridge. I believe the chorus, or some type of refrain (repeated words, phrases, etc.) is the main factor in setting the tone of the song. Repetition in song, or anything for that matter, is usually there to guide the audience to the heart of the work, even if meaning is not explicit. A song’s verses can say one thing, and the chorus can say another—seemingly. But, usually, the unifying factor is there if we listen close enough.