[Page 322]: "Ah! Why is it I cannot hate him" should be "Ah! Why is it I cannot hate you".
[Page 347]: Lyrics incorrectly given in music illustration and text as "Verranno lá sull'aure"; should be "Verranno a te sull'aure".
[Page 354]: "È mio rosa inaridita" should be "È mio sangue, l'ho tradita".
[Page 357]: "A voti così ardente" should be "A confession sì ardente".
[Page 359]: "Gustave Waez" is more commonly known as "Gustave Vaëz".
[Page 359]: "La Favorita" is the Italian title for "La Favorite".
[Page 366]: Some scores render "Clemente al par di Dio" as "Pietoso al par del Nume".
[Page 373]: "Son ardito" should be "Son tradito".
[Page 416]: The correct time of [La Traviata] is about 1850, not the time of Louis XIV. See the author's discussion on [page 417].
[Page 462]: "'Credo in un Dio che m'ha creato' (I believe in a God, who has created me in his image)" should be "'Credo in un Dio crudel che m'ha creato' (I believe in a cruel God, who has created me in his image)".