What, in my opinion, has made great music great is its ability to capture my emotions. The greatest music ever made utilizes dynamics and tempo changes to its fullest advantage. Nothing compares to feeling a crescendo build slowly as the tempo increases or a diminuendo slowly soften to a whisper. Even music such as the oldie but goodie, Shout! knows how to slowly get quieter and quieter until the singer is barely whispering, shout!, shout!, and suddenly the music gets a little bit louder now, a little bit louder now, hey-ey hey-ey, and the music gets faster and louder...and you feel yourself getting caught in a dizzied frenzy but you love it! It makes you want to throw your hands up and shout and it puts you in a good mood and that's what makes great music great.