Imam Ghazzali (ra) on Music as an Aid to the Religious Life
The heart of man has been so constituted by the Almighty that, like a flint, it contains a hidden fire which is evoked by music and harmony, and renders man beside himself with ecstasy. These harmonies are echoes of that higher world of beauty which we call the world of spirits; they remind man of his relationship to that world, and produce in him an emotion so deep and strange that he himself is powerless to explain it. The effect of music and dancing is deeper in proportion as the natures on which they act are simple and prone to emotion; they fan into a flame whatever love is already dormant in the heart, whether it be earthly and sensual, or divine and spiritual.
-Imam Ghazzali from “The Alchemy of Happiness”