Music is the language of the unconscious mind par excellence. Primordial racial memories are brought to the surface more readily by music than by natural scenery or any other art; it seems to be possible to relate familiar features of music to archaic experiences of humanity.
It is music that provides the strongest support for our thesis that aesthetic experience consists in the interaction between the universal primordial images buried in the unconscious and an external artifact or natural object which we call beautiful.
The incomparable power of music to move a listener to the depths of his being is well-known; it will, on occasion, bring him to tears. What is the explanation of the power of this stimulus which is unparalleled in the other arts? If our thesis is tenable it must be that music is for some reason an unusually effective agent for bringing to the surface archaic images and memories stored in the unconscious. As Jung remarks, "The man who speaks with primordial images speaks with a thousand .tongues. . . That is the secret of effective art." Now musical expression can stimulate archaic emotional experiences very effectively - fear by agitato, mourning by molto legato, excitement by prestissimo, sanctuary by rallentando succeeded by the tonic or home note, and in similar ways. These universal emotionally charged experiences become effective when they are raised from the deep unconscious to the surface mind, and it happens that music, unlike any of the other arts, provides precise and powerful means of effecting this transfer.
H.E. Huntley - The Divine Proportion: A Study In Mathematical Beauty.