It’s no surprise that music has the ability to fight depression—but did you also know it has the ability to improve blood flow and lower your levels of cortisol (a stress-related hormone)? Even listening to music before surgery can improve post-surgical results.
All the technical language summed up is that is activates chemicals in the brain that make you feel good and helps regulate emotion and memory. The benefits of music can be compared to meditation. Both had outstanding improvements involving mood and quality of sleep. Let’s be honest, more people would much rather listen to music than partake in meditation.
BUT, music also has the ability to make us incredibly nervous. (Cue the Halloween theme song). In that case, silence would be better than listening to something random. Some music can also encourage negative emotions in us such as anger and aggression. The rhythm and other musical elements have the ability to change our brain’s activity just like it can do the opposite and make us feel good. So confusing, I know.
Just like you would expect, slow tempo music with gradual chord progressions make us feel calm whereas chaotic, up-tempo music can do the opposite. To make matters a little more complicating, not everyone is the same. While some people may think AC/DC is too hectic, some people claim for that to be their relaxation music. http://time.com/5254381/listening-to-music-health-benefits/