Apparantly he did receive training and has done a few professional performances. It doesn't detract from what he does of course, it just undermines the 'from zero to hero' story.
The show did have a few other surprises it seems, especially when it comes to kids (those with talent besides cutes)
A six year old girl singing over the rainbow and reduces one of the judges to tears.
A 14year old doing unchained melody
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