The article traces the syncretism of the development of religion and culture, arts and genres of performance on the example of the formation of the beginning of the professional Uzbek-Tajik musical tradition of Bukhara Shashmaqom, starting from a pagan ritual basis. The uniqueness of its structure is in six parallel-identical constructions and the principle of unity of strict canons that have dominated for millennia. The autochthonous canon of the collective singing of the tarona, which is inherent only in the musical tradition of the Bukhara Shashmaqom, opens the unknown pages of early Zoroastrianism in its direct connection with the sedentary culture of the pagan Sogd during the mass evolutionary transition of the Sogdian people to monotheism under the direct guidance of the religious Teacher Zarathushtra - the author of the Gathas, the founder of the early Zoroastrianism.