Having shot to fame over the past few years as one of the few members of his generation to know, and care, about Sinatra.

26-year-old Michael Buble is one of those singing success stories capable of instilling a rosy blush in some, a greenish tinge in others.

With his eponymous debut album pushing more than two million copies and a full-on touring schedule which has already seen him sell out a Brighton show once this year, Buble's popularity is uncontestable.

While his velvet vocals and charming showmanship have clearly found their perfect vehicle in the golden strains of the Thirties and Forties, his attitude to his fans (he begins his dutiful web site postings with "Dear fans" and ends them "Very sincerely, Michael Buble") seem to appeal to that secret fetish for gentlemanly conduct which has kept Cliff Richard in the charts for half a century.

In the age of the prime-time Parkinson jazz singer, it is, however, difficult to buy any artist's positioning as a "soulful interpreter of classics".

And, given the unworldly whiteness of his teeth, his "ladies and gennelmen" accent and the fact that his most recent contribution to musical history was a cover version of the theme tune for Spiderman 2, Buble needs to work just that little bit harder to convince.

But, whether you reduce him to a nostalgic tribute act or claim for him a unique, swinging sensibility, there's no denying that Buble loves and respects the songs he covers. The current fixtures in his stage shows Come Fly With Me, The Way You Look Tonight and That's All were the staple of his childhood musical diet.

"Listening to Mel Torme, Ella Fitzgerald or Frank Sinatra as a kid was so great because they had this dulcet tonal quality I hadn't heard in modern singers," he says.

"Although I like rock and roll and modern music, the first time my granddad played me the Mills Brothers something magical happened.

"The lyrics were so romantic, so real, the way a song should be for me. It was like seeing my future flash before me I wanted to be a singer and I knew this was the music I wanted to sing."

Starts 7.30pm, Tickets £27.50. Call 0870 900 9100