The one-act opera Il Segreto di Susanna is rarely performed, probably due to modern views about glorifying smoking. A newlywed husband suspects his younger wife of infidelity because he frequently smells tobacco on her clothes. She's reluctant to admit her unlady-like habit, and much havoc ensues, but when he catches her in the act, all is resolved, and they happily agree to smoke together.
The second opera, La Voix Humaine, is a more frequently performed and popular solo vehicle for soprano. In this one-act opera, it is the husband who is unfaithful in the face of a wife who seems willing to compromise for the sake of the relationship.
After the run of Il Segretto di Susanna, Prato heads to Palermo to sing Sgt. Sulpice in Donizetti's La fille du régiment and the title role in Rossini's Il barbiere di Siviglia in Bologna.