Complex sentence: Marni Nixon (born February 22,1930) is an American soprano who is renowned for dubbing the singing voices of featured actresses in well known movie musicals earned her the sobriquet "The Ghostess with the Mostess", and also "The Voice of Hollywood".
Split into simpler sentences: Marni Nixon (born February 22,1930) is an American soprano renowned for dubbing the singing voices of featured actresses in well known movie musicals. This has earned her the sobriquet "The Ghostess with the Mostess", and also "The Voice of Hollywood".