im not sure i would want to listen to a long song, because then i would have time to think about what was about to happen. i would want to listen to whatever my favorite song was, maybe, and as that changes about once a week, i cant write a definite answer.
or i might want to listen to a song that makes me happy, like Good Day Sunshine, cause if you had time for one more emotion, dont you think it should be a good one?