Rocketflip. Beverly Sills Farewell Performance. Sills highlights her career and sings a tearful final encore of the Portuguese Folk Song: "Tell Me Why" that Estelle Liebling, her only voice teacher, gave her when she was ten. As a tribute to Liebling, Sills ended every recital with this song. Her long-time accompanist, Charles Wadsworth, plays for this final, moving performance. www.beverlysillsonline.com