Taking on a silent film centered around an opera singer feels like a gamble – wouldn’t much of the impact depend on hearing the singing? Greta Garbo makes a bold attempt, and largely succeeds, portraying “Leonora,” a young woman in love with "Don Rafael" (Ricardo Cortez), the son of a local landowner. His mother, "Doña Bernarda" (Martha Mattox), disapproves strongly and quickly orchestrates for Leonora and her family…