Can music heal?

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According to my experience, it really heal because when i feel down and feel frustrated about the world,thinking they are against me, i sometime or rather hear my manny favorite songs that will(really) relaxes my brainwaves, muscles and all other.And in music, i can relate myself with what the lyrics is telling to the people and i could say, yeah it is!!! and realizing things over. =) What do you think?