For me it goes much beyond music has the power to change things, as you can see, the perception of the thing, has the power to change our mood, to express a feeling, to have fun, to communicate. In order of great importance in the life of man since for each type of person there is a type of music that you like, there is no person who does not identify with a song or a rhythm of music. 
There is music for all religions, languages, ideologies, for the elderly, young people and children. Music has the power to unite the world to the rhythm of a single song. One example of this in recent years has been the song "despacito" by Luis the father and the father who reach almost 5 billion reproductions which means that the majority of half of the population and that the musical rhythms have power of reach all the places in the world.
In conclusion, music is part of our lives and when music is converted into an instrument to give a positive message, it begins to be much more important.
According to the traditoonal definition of the term, the art of sensiby and logically organizing a combination of sound and sound, the fundamental principles of melody, harmony and rhythm, through the intervention of complex psychoanimic processes.
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