Robert Nagy once performed in whose second opera?
Robert Nagy (tenor):  He also sang in the company premieres of "Die Frau ohne Schatten" (1966), "Billy Budd" (1978) and "L'enfant et les sortilèges" (1981). L'enfant et les sortilèges:  It is Ravel's second opera, his first being "L'heure espagnole".
Ravel