It's interesting to note the power of a 'hook in a song. We all have our favourite harp examples. They grab your attention and help you to look favourably at a song even if the rest of the song doesn't match the strength of the hook.
As soon as you hear the hook you're all ears.
Here are a couple of examples of short saxaphone hooks that have always grabbed my attention. I played a low F harp in 4th I think although I could be wrong.....I often am ;)