Elton John Sings at Rush Limbaugh's 4th Wedding

Kate Rogers and Rush Limbaugh

(By Stephen M. Silverman, People) - Talk about an odd couple: conservative radio commentator Rush Limbaugh and outspoken gay civil-union advocate Elton John.

But, according to a News Corporation (which owns Fox News) wire report, the Rocket Man, 63, serenaded the 400 guests into the wee hours Saturday night to celebrate the marriage of Limbaugh, 59, to Kathryn Rogers, 33, in the Ponce de Leon ballroom of Florida's fabled Breakers hotel in Palm Beach. Sir Elton's fee: $1 million, the report notes.