The Forbes 400 Summit on Philanthropy got some surprise entertainment this week as Warren Buffet and Jon Bon Jovi joined together for a duet. The Berkshire Hathaway chairman pulled out his ukulele on Tuesday to sing Bette Midler’s song, “The Glory of Love.” Mr. Bon Jovi, when getting ready for the duet, admitted that, “I’m more nervous now than I’ve been on stadium stages.”

Their performance was intended to emphasize the main points of the private meeting about charitable giving. The lyrics began, “You’ve got to give a little…” Mr. Buffett, with a net worth estimated at $44 billion has encouraged many other wealthy families to give away most of their fortunes to charity.

Jon Bon Jovi, similarly, has done a great deal of charitable work. He heads the Jon Bon Jovi Soul Foundation which offers food and affordable housing to the needy.