Some songs hit the spot and there are subliminal effects in almost every composition. Of course songs get charted and win prizes too. A really good song for me is the tough unending love and exposure of folly (my own included) type.
Among my favourites are the happiness songs. Here is a happiness song combined with smart insight: one of the maskils.
Psalm 32 is an intriguing happiness song, but also mysterious. Lead by the eye (vs. 8)? Hmmm