Final answer:
The given statement "a hook is a short catchy line, usually the song title", is false as a hook in music is a memorable musical or lyrical phrase that catches the listener's attention, and it's not necessarily the song title.
Step-by-step explanation:
A hook in music 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 hook can be both lyrically and melodically driven, but it is not necessarily the song title.
The term "hook" is used because just like a physical hook that catches objects, a musical hook "catches" the listener's attention.
A hook differs from a chorus in that it doesn't always repeat and can occur in various parts of the song, not just the chorus. A chorus is a part of the song that typically repeats both lyrically and melodically and usually follows each verse, whereas a hook can be a part of a chorus or other parts of the song and does not necessarily repeat in full.
The hook is designed to be the memorable part of a song that stands out and is easily remembered.