What is music? This question occupied my mind for hours last night
before I fell asleep. The very existence of music is wonderful, I
might even say miraculous. Its domain is between thought and
phenomena. Like a twilight mediator, it hovers between spirit and
matter, related to both, yet differing from each. It is spirit, but
spirit subject to the measurement of time; it is matter, but matter
that can dispense with space.
--_Heine_