Disappointing for her personally, no doubt, was that her singing voice had to be dubbed (albeit superbly) by the highly emotive, non-operatic songstress Gogi Grant. Through with films, Blyth's main concentration (after her family) were musical theatre and television.

Did Ann Blyth do her own singing in The Helen Morgan Story?

Although Ann Blyth had done her own singing in her other movie musicals, her trained soprano voice was judged too operatic for the role of Helen Morgan, and pop singer Gogi Grant's voice was dubbed in.

Did Ann Blyth do her own singing in Rose Marie?

Actress Ann Blyth Sings in 'Rose Marie' & 'Kismet'