“Music is the combination and modulation of sounds, and sound is the effect produced by the vibration of the ether.
Now, if the impulses communicated to the ether by the different planets may be likened to the tones produced by the different notes of a musical instrument, it is not difficult to conceive that the Pythagorean “music of the spheres” is something more than a mere fancy, and that certain planetary aspects may imply disturbances in the ether of our planet, and certain others rest and harmony.
Certain kinds of music throw us into frenzy; some exalt the soul to religious aspirations. In fine, there is scarcely a human creation which does not respond to certain vibrations of the atmosphere. It is the same with colors; some excite us, some soothe and please.
The nun clothes herself in black to typify the despondency of a faith crushed under the sense of original sin; the bride robes herself in white; red inflames the anger of certain animals.
If we and the animals are affected by vibrations acting upon a very minute scale, why may we not be influenced in the mass by vibrations acting upon a grand scale as the effect of combined stellar influences?”
H. P. Blavatsky