Classical pianist Lang Lang thumped out "Rhapsody In Blue, " before tenor Alfie Boe segued "O Sole Mio" into "It's Now Or Never, " jiving on the spot for the latter in a matter unbecoming of most opera singers.

CNN: Review: Rock stars invade queen's front garden

It's now or never, do or die.

BBC: Cockerill respects Ospreys threat

It's now or never.

NPR: A College Dream Inspired by a Song

"It's now or maybe never for me, " he said in an interview last month.

NPR: Weiner Launches Comeback Bid To Become NYC Mayor

In Chamberlain's final year before free agency, it is now or never for the one-time phenom to prove he should be part of the Yankees' future.

WSJ: New York Yankee Reliever Joba Chamberlain Trying To Bury the Hatchet

We offer our customers a great selection at exceptional value and the huge array of platforms we're now available on means it's never been easier or more convenient for our customers to access what they want to watch, however and wherever they choose.

ENGADGET: Lovefilm movie streaming arrives on UK Wii consoles, Wii U compatibility coming 'shortly'

This, above all else, has dictated the timing of the crucial summit between Mr Clinton, Mr Arafat and Israel's current prime minister, Ehud Barak, at Camp David, giving it sudden now-or-never urgency.

ECONOMIST: Bill Clinton makes his last bid for a Middle East peace