Surgery for a Gibb Brother Maurice Gibb, bassist and keyboardist of the 1970s group the Bee Gees, underwent emergency surgery Thursday for a blocked intestine.

"He is in critical condition in intensive care," a spokesman for his twin, Robin Gibb, said in a statement yesterday. "We are awaiting a full medical prognosis . . . but everyone is very, very worried."

Gibb, 53, was admitted to Mount Sinai Medical Center on Wednesday after experiencing severe intestinal pains at his Miami home. He underwent emergency surgery Thursday.

Since the surgery, Gibb has "opened his eyes, wiggled his toes and feet, so it's good," says the musician's manager, Carol Peters.

The Bee Gees -- Maurice, Robin and their older brother Barry -- are best known for their 1977 musical contributions to the top-selling "Saturday Night Fever" soundtrack. Among their disco hits on that album are "Stayin' Alive," "More Than a Woman" and "How Deep Is Your Love."

The group won seven Grammy Awards and has been inducted into the Rock and Roll Hall of Fame.

Clinton's New Labor Department

What's an ex-president to do?

Bill Clinton is no longer running the country but he's certainly steering the construction of his presidential library and museum in downtown Little Rock, according to U.S. News & World Report. He's supervising the choice of materials (such as specially tinted glass that screens out harmful ultraviolet rays) while sporting a customized hard hat stamped "President Clinton."

"He's the most hands-on guy ever," foreman Tom Jones says of Clinton. "He's really into every aspect of the construction."

Clinton likes to conduct meetings on the work inside the construction trailer. But the former president can't be there every day, so folks in Little Rock have come up with an idea: installing a "ClintonCam" so No. 42 can follow along on the Internet.

Police 'Get Back' Beatles Tapes . . .

Anti-piracy police in England and the Netherlands raided locations near London and Amsterdam and recovered 500 Beatles tapes. The raids, which were orchestrated by the London-based International Federation of the Phonographic Industry and city detectives, resulted in the arrests of five people. The tapes apparently are masters that have been missing for nearly 30 years.

Recovered were what are believed to be tapes of the band's legendary "Get Back" sessions from 1969, which included several never-released tracks. The sessions' original reel-to-reel master tapes disappeared in the early 1970s. If the tapes are found to be authentic, they represent a major find for Beatlemaniacs.

. . While a Bidder Gets Bach

How much are three LPs worth these days? Exactly $4,906 if you're Johanna Martzy. On Thursday, The Post's Tim Page reported that a rare three-record set of Martzy playing Bach's Sonatas and Partitas for Solo Violin was being auctioned on eBay, with a starting bid of $1,000. The auction closed at 10:55 a.m. yesterday, with the anonymous winner taking home a mint condition collection of rarities.

Call It a King Burger

The most expensive hamburger in New York debuted this week at the Old Homestead restaurant for $41. "This is not about price," said Marc Sherry, the restaurant's owner, "This is an event."

The Kobe beef is imported from Japan and comes from cattle that are raised on beer and get daily massages to make their meat soft and succulent. Thus, the big price tag.

Among the first to participate in the, um, "event" were "Sopranos" star James Gandolfini and New York Mets star Mike Piazza.

-- Compiled by Beth Buchanan

from staff and wire reports

Maurice Gibb of the fraternal singing group the Bee Gees is in critical condition after emergency surgery for an intestinal blockage.