Half of a song is referred to as the LYRICS. LYRICS are the words that make up a song, and they are usually written by the songwriter. They are often sung by the artist or group performing the song. The LYRICS are an integral part of the song, as they provide the story and emotion behind the music. They can be poetic, humorous, or even political in nature. The LYRICS are often the most memorable part of a song, and they can help to make a song popular.