St. Augustine: Confessions, Book 10, CHAPTER 33
I used to be much more fascinated by the pleasures of sound than the pleasures of smell. I was enthralled by them, but you broke my bonds and set me free. I admit that I still find some enjoyment in the music of hymns, which are alive with your praises, when I hear them sung by well-trained melodious voices. But I do not enjoy it so much that I cannot tear myself away. I can leave it when I wish. But if I am not to turn a deaf ear to music, which is the setting for the words which give it life, I must allow it a position of some honor in my heart, and I find it difficult to assign it to its proper place. For sometimes I feel that I treat it with more honor than it deserves. I realize that when they are sung these sacred words stir my mind to greater religious fervor and kindle in me a more ardent form of piety than they would if they were not sung; and I also know that there are particular modes in song and the voice, corresponding to my various emotions and able to stimulate them because of some mysterious relationship between the two. But I ought not to allow my mind to be paralysed by the gratification of my senses, which often leads it astray. For the senses are not content to take second place. Simply because I allow them their due, as adjuncts to reason, they attempt to take precedence and forge ahead of it, with the result that I sometimes sin in this way but am not aware of it until later.
Sometimes, too, from over-anxiety to avoid this particular trap I make the mistake of being too strict. When this happens, I have no wish but to exclude from my ears, and from the ears of the Church as well, all the melody of those lovely chants to which the Psalms of David are habitually sung; and it seems safer to me to follow the precepts which I remember often having heard ascribed to Athanasius, bishop of Alexandria, who used to oblige the lectors to recite the psalms with such slight modulation of the voice that they seemed to be speaking rather than chanting. But when I remember the tears that I shed on hearing the songs of the Church in the early days, soon after I had recovered my faith, and when I realize that nowadays it is not the singing that moves me but the meaning of the words when they are sung in a clear voice to the most appropriate tune, I again acknowledge the great value of this practice. So I waver between the danger that lies in gratifying the senses and the benefits which, as I know from experience, can accrue from singing. Without committing myself to an irrevocable opinion, I am inclined to approve of the custom of singing in church, in order that by indulging the ears weaker spirits may be inspired with feelings of devotion. Yet when I find the singing itself more moving than the truth which it conveys, I confess that this is a grievous sin, and at those times I would prefer not to hear the singer.
from Saint Augustine, Confessions, trs. R.S. Pine-Coffin (Penguin, 1961) 238-239.