"if you know in advance the Tetrachord or Quadriga of Apollo, then you will understand more easily and more happily without doubt, the science of מרכבה (Merkabah), the Chariot of Isra-El"For now I want to deal with his "tetrachord", the Quadriga of Apollo. Tetrachord is a combination of:
- tetra; meaning 4, 4 "of something"
- chord; from Greek chordon meaning "string" or "note", and the latin chorda, meaning bowstring
In music, a tetrachord is a series of 4 notes (which could be represented by 4 strings of different lengths, or 1 string divided into 4 parts. It should be noted that in modern