The judges did not expect much from the 20-year-old student, from Chester, after he told them he practised his vocals on a karaoke machine and explained that the tip of his tongue was permanently "fastened to the bottom of my mouth".
But he impressed the panel, with David Walliams telling him he had "a really stunning voice", while Alesha Dixon praised his "great vocal performance".
Another of the shows stars is 27-year-old Hackney musician MckNasty - aka Josh McKenzie - whose brother is chart star Labrinth, with Simon Cowell telling him his brother is "going to be really proud of you".
Less impressive is teenage dancer James Clifton, from Crawley, whose moves do not go down well with the head judge.
Cowell tells him: "James, you're a nice guy but, if I'm being honest with you, it looks like you walked into a kebab shop, drank two bottles of wine, got drunk, fell out on to the street. someone turns on Footloose and you start dancing."
All the pictures from last Saturday's BGT...
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