A song is a composition of lyrics and music intended to create a proportionate feeling or emotion in relation to a particular matter. Lyrics usually refer to topics, and melodies usually reference feelings (though a lyric can be composed so as not to reference any specific feeling).
Generally speaking, songs consist of a series of verses and a refrain, and the songwriter can choose what they want the verses to be about. In general, a verse will tell the story of the song, while the chorus will summarize what the song is about.
In addition to the verse, a song can also have a pre-chorus, which is a short phrase that builds up to a chorus. This pre-chorus may be repeated after each verse before the chorus, or it might only be used once.
The chorus is a moment of high energy and should be the climax of the song. It should also reflect the tension of the verses and pre-chorus that have built up to this point.
In most cases, the chorus will include a title of the song. It is the songwriter’s main message and often contains their hook–the part of the song that they think will catch the listener’s attention and make them want to sing along. It should also be a place where they can contrast the emotion of the rest of the song with the energy of the chorus. This can be done by contrasting the vocal tone and instrumentation of the chorus with those in the other parts of the song.