<P> Margaret Nixon McEathron ( February 22 , 1930 -- July 24 , 2016 ) , known professionally as Marni Nixon , was an American soprano and ghost singer for featured actresses in movie musicals . She is now well - known as the real singing voices of the leading actresses in films , including The King and I , West Side Story , and My Fair Lady , although this was concealed at the time from audiences . </P>
<P> Margaret Nixon McEathron ( February 22 , 1930 -- July 24 , 2016 ) , known professionally as Marni Nixon , was an American soprano and ghost singer for featured actresses in movie musicals . She is now well - known as the real singing voices of the leading actresses in films , including The King and I , West Side Story , and My Fair Lady , although this was concealed at the time from audiences . </P>
who sang for maria in west side story
who sang for maria in west side story
Marni Nixon
Marni Nixon