I know this is not The Chassidishe World, but…
The books of Kabbalah explain that all the tunes in the world originate in the Palace of Melody in heaven.
The Other Side- impurity – knows no melodies, nor knows the taste
of joy, since it is itself the source of melancholy. Only through
the sin of Adam did certain stray sparks fall into the unholy domain of the Other Side, and the task of the tzaddik is to
elevate those sparks of melody that have gone astray.
-Rabbi Shlomo Yosef Zevin in Sippurei Chassidim (attached to Bereishis 47:14)
[translation by Uri Kaploun for Hillel Press/Mesorah Publications]