I found the excerpt below from a speech by Pope Emeritus to accurately describe what music is, where it comes form, and how it is received.
"One of the first sources is the experience of love. When men are seized by love, a new dimension of being opens in them, a new grandeur and breadth of reality, and it also drives one to express oneself in a new way. Poetry, singing and music in general stem from this being struck, by this opening of oneself to a new dimension of life.
A second origin of music is the experience of sadness, being touched by death, by sorrow and by the abysses of