But the preface of his 8th Book of Madrigals (1638) seems to be virtually a fragment of it. Therein Monteverdi claims to have invented a new “agitated” style (Genere concitato, later called Stile concitato) to make the music "complete/perfect" ("perfetto").
However, the opening of his 8th Book of Madrigals (1638) seems to be a part of it. In that passage, Monteverdi asserts to have invented a new “agitated” style (Genere concitato, later known as Stile concitato) in order to make the music "complete/perfect" ("perfetto").