Sylvia, Act I. Sylvia's attendants: standing: Veronica Paeper, Patricia Kay, Colleen Power, Janice Illingworth. Kneeling: Penelope Hill, Margaret Duckitt. Music: Le?o Delibes. Choreography and production David Poole. Design: A. and J. Pritchard. Date of first performance: 29 September 1961.