Music can also be a sensual pleasure, like eating food or sex.  But its highest vibration for me is that point of taking us to a real understanding of something in our nature which we can very rarely get at.  It is a spiritual state of oneness.

-- Terry Riley

When the human being hears music, he has a sense of wellbeing, because these tones harmonize with what he has experienced in the world of his spiritual home.

-- Rudolf Steiner

There's a very basic, human, non-verbal aspect to our need to make music and use it as part of our human expression.  It doesn't have to do with body movements, it doesn't have to do with articulation of language, but with something spiritual.

-- John Towner Williams 

There is no complete spiritual life without music, for the human soul has regions which can be illuminated only by music.

-- Zoltan Kodaly 

My music is the spiritual expression of what I am -- my faith, my knowledge, my being . . . When you begin to see the possibilities of music, you desire to do something really good for people, to help humanity free itself from its hangups . . . I want to speak to their souls.

-- John Coltrane