Claudio Monteverdi, La favola d’Orfeo (first performed 1607), Act II, measures 274–279 (from the edition of Venice, 1615). The messenger is recounting Euridice’s dying words: “and calling on you, Orfeo, Orfeo, after a deep sigh expired in these arms.” Artusi objected to the “irrational” diminished seventh between voice (B♭) and continuo (C♯) at the word grave (indicated by arrows), expressing the depth of her sigh