From Language Hat:
Zadie Smith has an article in the NYRB (based on a lecture given at the New York Public Library in December 2008) in which she discusses Eliza Doolittle, Barack Obama, Shakespeare, and herself, among other many-voiced people. Here she is on being British:
Voice adaptation is still the original British sin. Monitoring and exposing such citizens is a national pastime, as popular as sex scandals and libel cases. If you lean toward the Atlantic with your high-rising terminals you're a sell-out; if you pronounce borrowed European words in their original style—even if you try something as innocent as parmigiano for "parmesan"—you're a fraud. If you go (metaphorically speaking) down the British class scale, you've gone from Cockney to "mockney," and can expect a public tar and feathering; to go the other way is to perform an unforgivable act of class betrayal. Voices are meant to be unchanging and singular. There's no quicker way to insult an ex-pat Scotsman in London than to tell him he's lost his accent. We feel that our voices are who we are, and that to have more than one, or to use different versions of a voice for different occasions, represents, at best, a Janus-faced duplicity, and at worst, the loss of our very souls.
And here she is on Cary Grant and Obama:
What did Pauline Kael call Cary Grant? "The Man from Dream City." When Bristolian Archibald Leach became suave Cary Grant, the transformation happened in his voice, which he subjected to a strange, indefinable manipulation, resulting in that heavenly sui generis accent, neither west country nor posh, American nor English. It came from nowhere, he came from nowhere. Grant seemed the product of a collective dream, dreamed up by moviegoers in hard times, as it sometimes feels voters have dreamed up Obama in hard times. Both men have a strange reflective quality, typical of the self-created man—we see in them whatever we want to see. "Everyone wants to be Cary Grant," said Cary Grant. "Even I want to be Cary Grant." It's not hard to imagine Obama having that same thought, backstage at Grant Park, hearing his own name chanted by the hopeful multitude. Everyone wants to be Barack Obama. Even I want to be Barack Obama.
Here's Zadie Smith's article in the NYRB.