This amazing kid unbelievably mixes sounds like a professional sound mixer would. And he’s only three years old. The judges themselves can’t believe it because they realize what talent it takes to be able to mix sounds to suit modern pop music.
However, some folks doubt if mixing sounds like that is talent at all, especially old-fashioned folks who see talent as it was seen some decades ago.
But consider this–it isn’t easy tinkering with electronic music devices, let alone producing modern pop music out of it. This kid does it like eating a piece if cake.