Soprano Angela Meade made her professional debut in the role of Elvira in Verdi's Ernani at the Metropolitan Opera. Marty Sohl/Metropolitan Opera hide caption

itoggle caption Marty Sohl/Metropolitan Opera

Renata Scotto has retired from the stage, but she hasn't slowed down — she's now a director and costume designer. courtesy of the artist hide caption

itoggle caption courtesy of the artist

More than 30 years after her death in 1977, Maria Callas' voice continues to thrill and divide fans and experts. EMI Classics hide caption

itoggle caption EMI Classics