Avicenna, or Ibn Sina as he is called in the middle east, was a descendent of Sinai people and a physician. He is considered as one of the forefathers of the modern medicine. He saw that people were sometimes healed by music and he wanted to understand how that healing works.
So he thought, 'What disease could I pick up or in what disease could I watch the effects of music? It must be something simple and not a grave illness among my patients.' Cancer was ruled out because it was deadly and lengthy. Toothache was ruled out because it was just too intense. The simplest illness? He decided ... Insomnia. Sleeplessness.
It occurs when you're out of balance yet trying to sleep, between 11 PM. and 1 AM. He found out that if he played on C around sleepless people, they would doze off easily. That hour of the night is associated with C, the note 'Do'. C is a tonic center from which to set out in many ways of scales and modal ways. When you look outside at the sky, it would be deep deep blue when it is moonless night, but when it is full moon night, it is bright radiant blue. The note C, color is Blue, as the Moon, the Midnight, the North and Coldness. They are the same vibrations. Yes, Midnight, the hour of the North, look at where your watch points when ending the numbers of hours of the day. Hundreds of years later, inventing the watch, the twelve atop your watch dial is at the top of the circumference of the Earth, to the North Pole, the land of ice. Ice and cold.
In the absences of music, take a cold shower, look at a blue color, or put your head to the North while lying down, then you will find you can sleep easily.
Insomnia at night! What is its opposite? The South, the Sun, the Heat, the color Red represent the Noon time. Between 11 AM and 1 PM there are those who suddenly become drowsy in the midst of the hustle bustle of work, they feel sleepy. They are out of balance with the hectic world around them. It is the Daytime insom-nia! G, 'Sol' is the fifth tonic for C, therefor it is the note of midday. It is the time of hot bright Sun. The hot represents Red and the direction of South. So to energize people and get rid out of sleepiness, they should hear the music centered around G 'Sol' or if there is no musical instruments around, they can have a hot shower, or looking at the color of Red, or face South. They will feel themselves being energized again.
Avicenna had divided the circle around us, whatever you might call-- the globe, the circumference, the orb. Now he looked to the West, where the Sun sets in the evening. Avicenna found out another simple daytime distress, in the realm of memory here. He noticed that there were some people prone to repetition or forgetfulness at the end of the day, at the time of sunset. He connected this to the West (where the sun sets), and pink is the color of it. There are two simple memory problems. One is thinking about so many things at the same time, so it is easy to forget other little things - like you sometimes struggle to find keys or forget appointments. The other is being stuck while thinking one thing, repeating it over and over again, as something that had happened in the daytime, completely unable to get it out of his mind. In the logic of music, the note D 'Re' is the fifth tonic of G 'Sol'.
Hearing compositions built around D will balance and heal the one who has memory problems. Who is the most known having memory problems? The are aged people. D is also associated with old folks, a time for remembering the past all the time. So, the West, the Sunset, the color of Pink, the Coolness and the old age are equal to the note D 'Re" vibration in cents and they tune the sense of memory.
The opposite direction is on the other side, the fourth cardinal direction, the fourth quarter, to the East. The hour of Sunrise. The note is A 'La' as the fifth dominant of D. represent the hours of the beginning of the day, childhood, curiosity, high energy. A's color is green. The color that you can first make out as the dawn breaks after the gray. The time of the day to look ahead to the future.
So the East is Green color, the Sunrise, the beginning and the note A, ' La', they all are equal in cent vibration and they balance curiosity in man. Musically, if a musician will start a composition on A 'La' and make it dominate in his composition cadenzas, he will play for hours passing trough many modulations, opposite of the D 'Re' tone. One can't leave that mode easily and move to another.
The fifth of A, is E "Mi", at the tropic of Capricorn between noon and sunset, and at the same time halfway between sunrise and noon, about 3 and 4 o'clock in the afternoon, and between 9 and 10 in the morning. It is the color of Yellow. The note B "Si" as the 5th tonic for the E will represent the next opposite, the tropic of Cancer midpoint between midnight and sunrise at about 3 and 4 AM, or between sunset and midnight at about 9 and 10 PM. The light of just after the twilight, when the last pink is finished but the blue has not fully deepened, or out of the blue of the night before the Orange of Sunrise appears, between those hours of the day. It is the color of Gray. The last fifth is the note F #, "Fa #", it's the center where all the cardinal points meet, the place of without direction, it is still, mysterious and Black in color, emotion and sadness.
Starting as a scholar, physician, and scientist, Ibn Sina assigned qualities to the relations of vibrations, tones, colors, directions, emotions and came to these conclusions.
C 'Do', Midnight, north, color blue, the Moon and cold is 750 cents
G 'Sol' Midday, south color Red, the Sun and heat is 1000 cents
D 'Re", Evening, West,color Pink, Sunset, and Cool is 666 cents
A 'La', Morning East, color Green,Sunrise and beginning is 888 cents
E "'Mi", Midmorning, Midafternoon, color Yellow, S.E and S.W is 563 cents
B 'Si" Midevenin& Mid Dawn, color Gray, N.E and N.W is 840 cents
F# 'Fa#' Center, no direction, color Black is 537 cents