Hookline

A hook is a musical idea, often a short riff, passage, or phrase, that is used in popular music to make a song appealing and to "catch the ear of the listener." The term generally applies to popular music, especially rock, urban, dance, and pop. In these genres, the hook is often found in, or consists of, the chorus. A hook can be either melodic or rhythmic, and often incorporates the main motif for a piece of music.