While Harry nothed that Sam's rendition of "Lego House" was the "best performance" he's done so far, he also gave Sam some practical advice. "When you hear all these young people scream acknowledge them. Pick someone and smile at them," he said.

While Harry nothed that Sam's rendition of "Lego House" was the "best performance" he's done so far, he also gave Sam some practical advice. "When you hear all these young people scream acknowledge them. Pick someone and smile at them," he said.

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