Don't let the shuffle button decide which of your favorite songs will play if you've taken the time to carefully select them. These songs were chosen by you for a reason. To provide a narrative structure and then give us a story. The key is balance. Don't start the show with too many heavy hitters. There won't be everyone there yet, and some people might be too shy, embarrassed, or sober to dance. Then it vanishes. It cannot be played again. It's completed.