It is the emotional impact of music that has made it so widespread.
Music originated when human beings listened to everything and their own voices, and it was because all voices can express specific feelings that people made musical instruments and composed melodies according to the pitch of the sound in their practical life.
Music is an extension of language. And language is naturally capable of expressing joy and sorrow. In the practice of life, the length of language, the level of syllables, are an expression of emotional mood, and music is the refinement and sublimation of this expression.
Music has a direct effect on the human mind. Low and slow music, on the one hand, helps people to calm the high state of mind, but also in a low state of mind in the people, you can reach the heart of the **** song. Perhaps we often fall their own sad tears in those soothing melancholy music.
The influence of music on people's moods is usually twofold, on the one hand, it improves people's moods. Cheerful music, for example, can directly uplift a person's mood, but sad music may exacerbate a low mood. Excessive catharsis and ****tweeting, on the other hand, can affect one's mood and even physical health.
So when you are in a depressed mood, those sad music, is there to guide you to vent your sadness, but if you are in a persistently low mood, some of the music or do not listen to good. Because sadness is not only contagious, but also aggravated. Some will affect normal life.
Music is a product of the human spirit. It is important to remember that music serves life. And not to use it to destabilize the psyche.
I hope you are satisfied with my answer.