Roberto Laneri (Prima Materia) further radicalizes his formal research path in the field of harmonic singing, with a highly rigorous compositional practice of scores and rhythmic placement of overtones. At the dawn of Western counterpoint and the birth of polyphony, he imagines as in a dream the famous Magister Perotinus (XII century) in ecstatic contact with higher entities (Jedi Masters) who would introduce him to those secrets of the vocal art, further developed in later centuries. Among the mysteries of subtle acoustic phenomena such as resonance, phasing and interference, the criterion of harmonic convergence (i.e. the convergence of different fundamentals on common overtones) emerges as a powerful compositional tool. The strength of this music lies in the vibrational power of sound, in an expanded archetypal liturgy, where lights and shadows of ancient Gothic cathedrals infinitely amplify the imaginative transformation of the real, as in the vesica piscis-shaped crevice of Noura Tafeche's sensational cover.