Having dealt with the subject of planetary numbers we may now consider that of Planetary Sounds, these being an obvious connection between Number, Form, Sound and Colour. Number underlies all forms, all sounds and all colours, for modes of vibration in the same universal medium give rise to all of these. Thus it is said that the Logos or Word gave existence to all living forms. Those who have constructed Sound-forms by means of the Eidophone will readily understand how all forms may be derived from simple or complex sounds. Sound is also related to colour, and there are those who are sensitive enough to see sounds and to hear colours.
The seven notes of the gamut are related to the seven celestial bodies, thus—
C D E F G A B
Sun Saturn Mercury Moon Mars Venus Jupiter
The colours answering to these are—
Orange Indigo Blue Green Red Yellow Violet
The numbers following the order of the gamut bring us once more into touch with the inevitable apposition of the fire and water elements, represented by Mars and the Moon, to which reference has already been made in the preceding chapter. The numbers thus arranged are—
| Sun | Saturn | Mercury | Moon | Mars | Venus | Jupiter |
| 1-4 | 8 | 5 | 7-2 | 9 | 6 | 3 |
| 18 | 18 | |||||
| 9 | 9 | 9 | ||||
| Mars |
If we multiply this number 9 into the number of the signs of the zodiac we shall obtain 108, which gives us the key to the Ashtottaravàk or 108 sounds of the Mantrasara. Let us look at the origin of these, 108 sounds, since they have been much exploited without any specific explanation of their origin.
In Indian Astrology there are 27 lunar asterisms or Moon-stations which are each of 13° 20´ in extent. It has already been said that the whole period of man’s life is taken at 120 years, or an arc of 120°, which is one-third of the circle, and by dividing this by 9 we obtain an arc of 13° 20´, which is the extent of a lunar asterism or Moon-station. These Moon-stations were in great repute among the Arabian astrologers, who attached specific influences to them, but in the West they have been entirely neglected. They still continue to form the basis of all Indian calculations, and, as will be shown, are at the root of the planetary sounds.