Blues guitarist Tab Benoit was looking ahead last January when he brought together some legendary Louisiana musicians for a recording session aimed at publicizing the dangerous erosion of the wetlands.

NPR: Tab Benoit: 'Voice of the Wetlands'

The Vienna Philharmonic gave its first note-perfect performance under Mr Kaplan's baton and he experienced his deepest satisfaction when the horn section, struggling in a recording session to accommodate the changes, played one passage 11 times in their earnestness to get it right.

ECONOMIST: Gilbert Kaplan

As he tells NPR's Tavis Smiley, he began working for a local recording company as a session player when he was just 16, for musicians such as Otis Redding, Eddie Floyd and Wilson Pickett.

NPR: Booker T. and the MG's

Upon deciding to make up a new song rather than do a cover, Sir Paul said he turned up to the recording session with a "crazy guitar" actor Johnny Depp had given him.

BBC: Sir Paul McCartney surprised at 17th Grammy win

But if they want to make a recording of the OpenTok session, TokBox has announced that it will charge customers for that feature.

FORBES: TokBox Puts Face-to-Face Video on Web Sites

There will be no recording of the session, and there will not be a stenographer in the room.

CNN: Bush, Cheney face 9/11 panel Thursday