Ashley Elliott, 16, told judge Simon Cowell that he believes he can make a career out of music despite the fact that he only plays a percussion instrument.
Before Elliott walked on stage for tonight's (March 31) Britain's Got Talent episode, Cowell was despairing at the acts coming onto the stage, muttering that all the Blackpool auditionees were giving them "pier stuff".
When Ashley entered, Cowell warned him that it would be a "very tough audience", but the teenager insisted that he wants to be a professional xylophone player.
He said: "I've been playing the xylophone for two years. I started off in my percussion teacher's house and I eventually ended up buying that one, and that's the one I'm playing today.
"I live at home with my mum and dad on a farm. Dad is a farmer and the whole family have been farmers for hundreds of years, but I want to break away and do music as a career."
Judge David Walliams asked Ashley: "Does it get the girls, the xylophone? Because chicks love a xylophone."
Cowell then queried: "Okay, has anyone sold records playing the xylophone before?"
Ashley argued that there have "been people who've been accompanied playing the xylophone", and mentioned famous percussionist Evelyn Glennie, forcing Cowell to admit that he "forgot" about her success.
Episode two of Britain's Got Talent airs tonight (March 31) at 8pm on ITV1.
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View a gallery of the acts performing on the show below: