If Tennessee Williams had written "Where's Poppa?" sans laughs, the resulting meller would resemble the fearlessly turgid, ironically titled "Tranquility," a risible variant on "Mommie Dearest." To his credit, opera director Robert Alfoldi gives the material his straight-faced all, and his thesps respond. Pic will actually play gangbusters to auds prepped for over-the-top mothe...