The Philadelphia Lyric Opera Company was an American opera company located in Philadelphia, Pennsylvania that was active between 1958 and 1974. The company was led by a number of Artistic Directors during its history, beginning with . Other notable Artistic Directors include Julius Rudel and Anton Guadagno (1966–1972). The company produced between four and six of their own operas every year in addition to sponsoring numerous traveling productions from the New York City Opera. In 1975 the company merged with the Philadelphia Grand Opera Company but retained its original name. With the combined resources of both companies, the Philadelphia Lyric Opera Company began producing higher quality productions with name artists such as Luciano Pavarotti, Joan Sutherland, Roberta Peters, Montserrat Mo