A notable success was achieved with his opera "La Grande Breteche" when it was commissioned for broadcast by the NBC Opera Theatre in 1957.
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In 1957 he portrayed the title role in a nationally broadcast performance of Mussorgsky's Boris Godunov with the NBC Opera Theatre.
He was one of the founding members of the NBC Opera Theatre, a company he performed with throughout the 1950s in such productions as Benjamin Britten's Billy Budd and the world premiere of Norman Dello Joio's The Trial at Rouen.
Don Giovanni (1961, with W. H. Auden, for an NBC Opera Theatre production of the opera by Mozart).