According to David Saltzman of the Robin Hood Foundation, movie executive Harvey Weinstein came up with the scheme: “Weinstein had this great idea that we could enlist Bill ClintonBill ClintonTrump seeks to stop lawsuit from ‘Apprentice’ contestant Trump asks why Clintons' ties to Russia aren't under investigation Playing hot potato and musical chairs with healthcare MORE to convince Led Zeppelin to reunite to perform at the 12-12-12 concert.”

Saltzman says the 42nd president was game, telling the pair, “I really want to do this. This would be a fantastic thing. I love Led Zeppelin.”

But when Clinton approached the “Stairway to Heaven” musicians, who were being recognized at the Kennedy Center Honors last year, the answer was a big, fat no. “Bill Clinton himself asked Led Zeppelin to reunite, and they wouldn’t do it,” recalls Saltzman.

All wasn’t lost though. On the way back from the dud of a mission, Saltzman says he bumped into Rolling Stones guitarist Keith Richards in the airport and he agreed to rock out with his band at the star-studded charity concert.