Dorothy is right--the music must be "excellent" to the specific individual at that particular time.

All the more reason to not be narrow--to branch out and listen to lots of kinds of music--and likely get to really feel good about quite a few types. I love to listen to orchestral music, some smaller classical instrumental ensembles, classical choral, folk, bluegrass, klezmir, blues, Sephardic, madrigals, Irish, Western Swing, parlor songs, drinking songs, opera choruses (especially if they are drinking songs or similarly rousing), jazz as long as the melody is discernible, country and western, doo-wop, sea chanteys, early rock--and the list goes on. I can always find something I'd like to listen to. And every one of these makes me feel great.

And I sing and play a good number of these types--which helps of course.

What's more, if you have wide-ranging tastes no type will go stale- and you'll have a very short list of "Oh,no, not again"--if any-as long as you can pick what to listen to, of course.