This Welsh 160-piece choir hits all the right notes | Audition Week 1 | Britain's Got Talent 2015

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The Judges are hypnotised by Welsh choir Côr Glanaethwy's spine-tingling performance of Benedictus.
David feels like he's been transported to heaven, and Simon thinks he may even be looking at this year's winners!
Do they have with it takes to go all they go all the way?
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