The voice of Snow White in the first full-length animated film, Snow White and the Seven Dwarfs, released in 1937 belonged to Adriana Caselotti. The 21-year-old coloratura soprano beat out 148 other candidates for the role. Her father Guido Caselotti, an immigrant from Italy, was a teacher of music and a vocal coach.

Her mother, Maria Orefice (from Naples), was a singer in the Royal Opera. Her older sister, Louise, sang opera and gave voice lessons. When Caselotti was seven, the family went to Italy while her mother toured with an opera company. Caselotti was educated at an Italian convent, San Getulio, near Rome, while her mother performed in the opera. 

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Fonte: Jovina Cooks Italian