Astrology interprets human character traits through the positions of the planets at the
moment of birth. Previously regarded as forces from outside forming life and character, nowadays planets are more regarded as energy-constellations and the horoscope is in fact a map of relationships of energy.
To us the resulting atmosphere of these energy-vibrations can excellently be translated
into musical expressions. The idea to combine music and astrology into sound images therefore is not illogical to us. As composers we like to use programming rules in generating music.
The relationship between astrology and music is a very old one. The zodiac consists of 12 signs,
the western scale consists of
12 tones. Astrology also uses the concepts of harmony and disharmony. Keppler was one of the first to relate astrology and music.
We transformed astrological symbols into programming rules, thus enabling the computer to generate music. It was a long lasting process of intuition, creation, programming, listening and rearranging. And combining astrology, astronomy, music theory, and a selection of mystic approaches into a horoscope/music program.
That's how AstroMusic originated, a form of conceptual music, aiming at the creation of personal music based on the data of the birth chart.
2. Principles of orchestration and melody-composition
There are 12 basic melodies, one for each sign. Each melody consists of 7 notes, composed by binary representations of elements and crosses, but mainly by I Ching like hexagrams. Traditionally the fifth line of a hexagram is the ruling line. So this line accounts for the primary interval. The Crosses are also responsible for the rising (cardinal), descending (fixed) or alternate (mutable) melodies.