In addition to your main lyrical/musical hook, you should attempt to create and include secondary hooks to generate and augment your listeners’ interest.  Think about inserting short guitar, bass or piano riffs between your song’s lines, or add a chord change when there’s a pause in the lead vocals, or maybe a catchy ad-lib.

Doing this will potentially have the effect of making your song more dynamic. It will also almost certainly make the composition more memorable in the minds of your listeners.

Image via Flickr by visual.dichotomy