Un tentativo di falsificazione (non riuscito) della teoria della “quintina” proposta da Giuliano D’Angiolini.

This work considers the hypotheses formulated to explain the phenomenon of the “quintina” in confraternal songs in Castelsardo (Sardegna), giving particular attention to the Jesu and the theory recently proposed by Giuliano d’Angiolini. D’Angiolini believes that the emergence of the quintina is not related to a “fusion” of the harmonics, as previously maintained, but to an acoustic illusion created mostly by one of the voices of the vocal quartet. The bogi’s vocal spectrum would thus undergo a scission, becoming be responsible for a psychoacoustic phenomenon that leads the ear to interpret some of its harmonics as a new voice. In this article, d’Angiolini’s theory is independently verified and further experimental proof in its favour is provided.