Symphonies aim at healing the soul by taking human emotions and concerns and, through the alchemy of art, make us somehow feel better about all of life--and us. Music touches something higher in us directly. All of the arts touch something that is beyond the ordinary machinations of life. And this "something higher and more" makes even the most homespun art somehow therapeutic.
The smile of the contemplative in the presence of the Beloved is merely a physical expression of the total joy one perceives as one communes with God. St. Bernard used to say, "The joy of being in love is in the very loving." In other words, joy is not to be sought for itself, but is a by-product of love, and the smile is but the physical, exterior expression of the inner joy-love.