Brain Music is NEW. This is a rather tricky criteria, as anything we become familiar with loses this quality of newness after repeated listenings. For example, if you are very familiar with certain classical music pieces, these have lost this quality. Beethoven's 5th Symphony sounds fantastic the first few times you actually sit down and concentrate on listening to it. But it loses that rare "WOW!" peak thing that happens in your brain when you encounter a brand new experience. You have to go a while and "forget" much of it before your neurons fire off in the same way- and they never quite do if you've heard it a dozen times. To get your brain to grow and learn- and go those pleasure synapses to fire full force- you have to keep EXPLORING. Your music and listening experience must be infinitely varied, and always searching out new things.
The brain craves-it NEEDS- new information. Grow or Die. Mother nature has in fact set up a reward system in the limbic portion of our brain. When you process new information, like a new movie, new scenery, NEW MUSIC, this sets off neurotransmitters in the pleasure centers in your brain, and you FEEL GREAT. By constantly exposing yourself to new things, your brain gathers data that helps you to survive in this world. Listeing to new music is one of the easiest and most pleasurable ways to help your brain grow and work more efficiently.
True Story: A guy goes swimming every day, 10 laps. At first he loses weight. But he never changes his routine. After a year, he continues to swim 10 laps- and starts gaining weight. Moral of this story? Move on!