The world is chock full of ear hurt that some people willingly refer to as music. The Jonas Brothers, Lady Gaga, Conway Twitty; they all produce high quality records and 8-tracks for our enjoyment whether we like it or not.
But music--even terrible music--has a stunning amount of power over our bodies. For instance science says music can...
7Repair Brain Damage
Slapping neuroscience right across the face, music is able to take stroke, lesion or other brain-damaged patients who have lost the partial ability to see or speak and return it to them. The Kenny Rogers Effect--not named because it deals with gorging yourself on chicken or replacing your old, grandfatherly face with a shiny new rubber one--takes patients with visual neglect, the inability to recognize half of what they see, and lightens the effects of the damage. Patients who only shave half their face or grab for the right boob at a strip club can now put that dollar bill in the left or right side of her thong. The Gambler never stops being awesome.
As long as she's dancing to Kenny Rogers...
Patients with left-side brain damage who can no longer speak can find they are able to sing words, often without trouble or training. After that, it's just a matter of time before they're able to speak simple sentences with practice. That may not sound like much, but if you've ever tried to order a side of fries with left-hand only charades you'll understand what a blessing this can be.
How Does it Work?
Melodic intonation therapy, or singing until you can talk, takes advantage of the fact that language functions are located in the left brain, but music lives over on the right side of the brain. So, when that asshole stroke robs you of your ability to speak, you can train your brain to move those functions to the other side by associating music with language. This essentially rewires a lifetime of growth and an entire history of evolution into meaninglessness interpretations of random head noises from a guy who hasn't shaved his beard since the 70s.
Listening to actual non-terrible music has an additional effect, since pleasurable music releases dopamine that simply makes certain parts of your brain function better (particularly if they were damaged before).
Dopamine is your brain's natural crack
In a nutshell, music gives your brain a massage and fills it with happy chemicals, turning you from a one-eyed mute into an Island in the Stream.