<P> Margaret Nixon McEathron ( February 22 , 1930 -- July 24 , 2016 ) , known professionally as Marni Nixon , was an American soprano and playback singer for featured actresses in movie musicals . She was best known for dubbing the singing voices of the leading actresses in films , including The King and I , West Side Story , and My Fair Lady . </P>
<P> Margaret Nixon McEathron ( February 22 , 1930 -- July 24 , 2016 ) , known professionally as Marni Nixon , was an American soprano and playback singer for featured actresses in movie musicals . She was best known for dubbing the singing voices of the leading actresses in films , including The King and I , West Side Story , and My Fair Lady . </P>
who sang as maria in west side story
who sang as maria in west side story
Marni Nixon
Marni Nixon