Harry Potter Needed Voice Soundalike

Towards the end of filming Harry Potter and the Philosopher's Stone (2001), Daniel Radcliffe hit puberty and his voice broke, creating a problem for the final scenes. To keep Harry sounding like the same young boy from earlier in the film, the production brought in a child "soundalike" actor, Joe Sowerbutts, to overdub some of Radcliffe's lines in post-production.

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