Columbia Masterworks Records by John Gielgud—the longest-running "Hamlet" in Broadway history to date. Columbia Masterworks' most successful Broadway album was the original cast recording of "My Fair Lady" (OL-5090, 1956), starring Rex Harrison, Julie Andrews, Stanley Holloway and Robert Coote. This first album was issued only in mono, but the first stereo recording of "My Fair Lady"—featuring the same four stars, this time with the London cast—followed in 1959. And in 1964, Columbia Masterworks issued the film soundtrack album of the show, starring Rex Harrison and Audrey Hepburn's "singing voice", Marni Nixon. The most successful film soundtrack release on Columbia Masterworks was the
Marni Nixon People's Concerts", including in 1960, singing "Improvisation sur Mallarmé I" from "Pli selon pli" by Pierre Boulez, and on April 9, 1961, in a program entitled "Folk Music in the Concert Hall", singing three "Songs of the Auvergne" by Joseph Canteloube. Before "My Fair Lady" was released in theatres in 1964, Nixon played Eliza in a revival of the musical at New York City Center. Nixon's first onscreen appearance was as Sister Sophia in the 1965 film "The Sound of Music". In the DVD commentary to the film, director Robert Wise comments that audiences were finally able to see the