As someone who's not a fan of opera, I actually find Deanna Durbin enjoyable having liked her previously in Can't Help Singing among a few of her other movies I can't remember by title right now and in her debut with Judy Garland in the short Every Sunday. In addition to her singing voice on many tunes like "Nessun Dorma" at the end, Ms. Durbin also displays some wonderful humorous touches that matches the veteran comic supporting cast of male butlers that follow her around. I was even enjoying the not-too-compelling-story at least until Franchot Tone-whose character was seeing another woman-seemed to be starting an affair with Deanna. Ms. Durbin isn't the only one who performs, however, since in the beginning when we first see Tone's songwriter character, a couple of women who call themselves the Sunshine Twins (one of whom is Iris Adrian who I knew as the landlady in That Darn Cat-Hayley Mills version) do a funny number called "Is It True What They Say About Dixie?" in front of him. So musically and comically, His Butler's Sister was a mostly enjoyable Durbin vehicle.