Paul Potts is set to top the chart this Sunday with his debut album.
The Britain’s Got Talent winner released One Chance on Monday, and is outselling nearest rival The Enemy by five to one.
The singer is on course to shift at least 100,000 copies by the weekend.
HMV’s Gennaro Castaldo said: “It’s incredible how TV can take a complete unknown artist and catapult him to overnight chart success.
“Paul’s brand of music has very wide appeal, as the likes of Il Divo and G4 have shown. This gives him every chance of connecting with a wider audience, and you only need a portion of the show’s TV viewers to go out and buy the recording for it to become a huge hit.”
The 36-year-old was a mobile phone salesman before finding fame on the TV talent show, but he signed a £1 million deal with Simon Cowell’s record label SyCo Music, part of Sony BMG.
One Chance is set to be released in 15 countries after the amateur opera singer from Port Talbot became a global sensation.
His old employers at Carphone Warehouse are selling copies in stores – the first time the company has sold records – and movie bosses are now keen to put his story on the big screen.
“It’s unbelievable. Four weeks ago I was in the store selling phones,” he said.
CLICK below to watch Paul Potts chat to whatsontv.co.uk and sing Nessun Dorma.