Since this is certainly the case, lets see if we can shed some light on this often misunderstood yet absolutely essential piece of commercial songwriting. In short, the hook must be that part of the song the listener goes away remembering. Great hooks start with great ideas. Great hooks sell great songs. Great hooks are what publishers, record companies and recording artists are all looking for.
Most publishers decide to pass or accept based on the hook.
I have worked with major publishers that won't even listen until you have pitched the hook first. It is almost always the song's title, and is usually found within the song's chorus. Musically speaking, the hook is often the most dynamic part of the song. While most hooks are lyrical lines, they are often followed by a musical figure that enhances the lyrical line. The Dire Straits tune Sultans of Swing is a fine example of this technique.