Music

Music: The strange art of arranging sounds in time so as to produce a continuous, unified, and evocative composition, as through melody, harmony, rhythm, and timbre.
Music can also be vocal or instrumental sounds possessing a degree of melody, harmony, or rhythm.
Simply put a musical composition is music.

Next time you're near one, pop into a branch of Guitar Guitar and have a listen to what's going on in there. It's probably music but it's hard to be sure. Maybe it's something else, something greater and higher, something that's progressed past the audio appreciation of the common man. I don't know. You have to experience it at least once in your life. Then you can die happy.