Televised broadcasts of performances by NBC Opera Theatre. an opera company owned and operated by the National Broadcasting Company (NBC). The company had been formed for the purpose of televising both established and new operas in English. During its history, it also gave live theatrical performances. The company performed a total of 43 operas for NBC, between 1949 and 1964. NBC disbanded the opera company in 1964 and liquidated its assets.—Dimos I