Kenny Chesney and Jimmy Buffett did sing at least one song together at this week’s concert for Philip Morris executives at the Westin Resort, St. John. One person who watched the show from the beach, outside Buffett’s custom-made tent (lighting grids, huge amplifiers, generators) said, "I heard Kenny. And I saw his hat." Another report said Eric Clapoton was in the audience. And the boat people at the shoreline were having a great time … lots of skinny dipping and topless dancing on deck, sources tell the Inquiring Iguana.