OMEYOTL-DUALITY arises from the Mesoamerican mythology and is the principle of duality, it's in the thirteenth heaven. The ancient Mexicans believed that the underworld had 9 layers and 13 layers in the direction of the sky, the last layer or number 13 is the place of duality. Ome: two, the place of duality, the mirror of the night and day, mother and father of gods and men, giver of life ... this is the supreme principle ... is in the thirteenth heaven. Duality is created here for the joint provision of the opposites; 13 versus one. The piece comprises 13 cycles or Stratus that are thirteen ways of playing the instrument (tr., Trem., Gliss., Jetée, etc.) * 6-segment compounds found each other, 1,2,3,5,8 and 13 times (= 32 = sect. golden 52), the relationship of the piece obey the same proportions, at intervals, in the rhythms, each string in particular the microtones, etc.