Music is a special material form, which is often thicker and more penetrating than words. It can act on people in the form of matter and cause psychological changes. The melodious music and melodious melody make people immerse themselves in the music, eliminate other thoughts, be calm, and make people breathe slowly and relax, thus adjusting their body and mind and achieving the effect of being beneficial to physical and mental health. You've heard of music therapy. Isn't that an extension of the magic of music? Beethoven, Mendelssohn, Bicai and Bach are all such masters in the creation of mood-regulating music. Bicai's "Prelude" has the function of inspiring mood, while "Nocturne" has the function of nourishing the mind and prolonging life; Mendelssohn's Scherzo has the function of strengthening the brain and improving intelligence, Allegro Activity has the effect of eliminating troubles, and Overture has the effect of stimulating appetite. And Bach's Lyric Dancing Songs let you release your body and mind when you are tired, and achieve the purpose of relieving fatigue.