What makes music happy?
It’s driven by two factors: How much you like or dislike a piece of music, and secondly, how arousing it is… to what extent it gives you a physiological jolt. You can gauge a listener’s emotional response to a piece of music by knowing if he or she likes or dislikes it, and if it’s arousing or not.You can like calm music, but it doesn’t arouse you. And with unsettling or scary music, people may not like it, but it’s highly arousing. Happy music gives you something you like but also tends to be arousing.