From the introduction by Luigi Gaggero:

“In our interpretation of the Fourth Book, we have considered the poetic text as the guiding element that defines all other musical parameters: dynamics, rhythm, colors and vocal gestures. Absolute respect of the prosody of these texts (and not only the search for clear and correct pronunciation, but also the respect of the metric, rhyme and internal assonance) has led us to look for an ever-changing tonal palette, linked to the emotional movement of the affects, and a variety of vocal gestures closely related to the meaning of the poems. In particular, taking into account the fact that Monteverdi wrote 'L’Orfeo', the first true masterpiece in the history of opera, only four years after the publication of the Fourth book, we felt it was important to seek the harmony of the whole without losing the personality and autonomy of each single voice within the madrigal: only in this way, we believe, can one underline the genius of Monteverdi, who, with a sensitivity that has few equals in the history of art, tells us with infinite love about the human soul, and the voices that inhabit it”.