"Music is a fair and lovely gift of God which has often wakened and moved me to the joy of preaching. St. Augustine was troubled in conscience whenever he caught himself delighting in music, which he took to be sinful. He was a choice spirit, and were he living today would agree with us. I have no use for cranks who despise music, because it is a gift of God. Music drives away the Devil and makes people happy; they forget thereby all wrath, unchastity, arrogance, and the like. Next after theology I give to music the highest place and the greatest honor. I would not exchange what little I know of music for something great. Experience proves that next to the Word of God only music deserves to be extolled as the mistress and governess of the feelings of the human heart. We know that to the devils music is distasteful and insufferable. My heart bubbles up and overflows in response to music, which has so often refreshed me and delivered me from dire plagues."
Martin Luther in Roland Bainton, Here I Stand: A Life of Martin Luther, p. 341.