File:BGT2015 Côr Glanaethwy Semi-Final

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See more from Britain's Got Talent at http://itv.com/talent

The 160-plus-piece choir from Wales had the audience and the Judges enthralled with their mesmerising audition.

But will their semi-final performance be the answer to their prayers?

See more from Britain's Got Talent at http://itv.com/talent

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