By Nekesa Mumbi Moody
Wire Service Correspondent

NEW YORK (AP) – The buildup to Leona Lewis' stateside debut has been so great that you half expect her to be surrounded by heavenly angels when she appears.
Backed by music mogul Clive Davis, the budding British diva has already drawn endless comparisons to Mariah Carey and Whitney Houston for her booming voice. No less than Oprah Winfrey fawned over her talents on a recent show. She even managed to win over Simon Cowell, who fell in love with her talent when she won "The X Factor," the British version of "American Idol." Cowell signed Davis and executive-produced her debut album, "Spirit," which was released in the U.S. this week.
"It was blindingly obvious when this girl came on the show that this wasn't just someone who had the potential to be a good singer, this was someone who had a potential to be a star," Cowell told The Associated Press.
For a new artist, the attention can be daunting.
"It's quite scary," Lewis said in a phone interview and she was told - probably for the millionth time - about comparisons to Carey and Houston. ``It's a massive compliment. Personally I've got a lot of hard work to do."
But early signs show that Lewis, 22, may be able to deliver on the lofty expectations. The album is already a top seller in Europe. Last month, she scored a No. 1 hit on the Billboard Hot 100 chart with her first single, "Bleeding Love" – the first time a British woman has topped that chart in 21 years.
"Leona is the first vocalist that I have heard in well over a decade that between her voice and her appearance and just presence, she had the different elements that I thought were necessary to be a world-class singer," said One Republic's Ryan Tedder, who co-wrote "Bleeding Love."
While there are certainly plenty of huge voices, Lewis' pipes have an elegant tone and impressive range that recall Carey and Houston, two of the most successful pop divas ever. However, Carey and Houston debuted when soaring vocals and dramatic power ballads ruled radio, which is no longer the case.
That's why "Spirit" includes a mix of mid-tempo songs sprinkled with ballads like her remake of Roberta Flack's classic "The First Time Ever I Saw Your Face." Davis, who along with Cowell executive produced "Spirit," said it was important not to typecast Lewis as a balladeer: "I really see her as a contemporary singer who is versatile and who can do all types of material."
Her singing background seems to bear out Davis' assessment: The daughter of a Guyanese part-time DJ and a Welsh ballet teacher, Lewis grew up exposed to a variety of genres. She got the performing bug early, appearing in local talent shows as a child and attending a performing arts school. But in her early teens, it was opera, and not pop, that enthralled her.
"My training is kind of classical, so I've done a lot of opera, and I was very interested in Leontyne Price," Lewis says in her sweet, shy-sounding voice. "As I got older and more into, like, contemporary music and all that kind of jazz, soul and blues ... I kind of found myself shifting toward that."

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