(Composer's note)  The piece has been inspired by the Ave Maria of Giuseppe   Verdi, who was among the first composers to adopt the   Enigmatic scale, which was in turn coined by Adolfo   Crescentini in 1888. This musical scale is pretty unusual,   with elements of both major and minor scales, as well as the  whole-tone scale. Despite the weird sound of such a scale,   I made an effort to create a natural harmonization of it   (most of which on 'Cantus Firmus'), in order to show its   intrinsic richness. However, the 'Cantus Firmus'- shown to   basses from measure 3 to 10 and afterwards transposed into   pseudo-subdominant to tenors from 28 to 35, and again to   basses from 36 to 40 - is not the principal element.  Actually, I wanted to focus the attention on the strict   counterpoint between the voices, which is the real element   leading to the increase and decrease of musical tensions.   Thus, the composition starts and ends with pureness of   intervals of fifth, which have also a clear mystic-symbolic   meaning. These intervals suggest the further material for   the whole development of the piece.