Violinist Joshua Bell performs in an intimate salon atmosphere in Lincoln Centre's Penthouse with his friends -- including Sting, trumpeter Chris Botti, soprano Renee Fleming, singer/songwriter Regina Spektor, jazz singer Jane Monheit, baritone Nathan Gunn, pianist Marvin Hamlisch, bandoneon player Carel Kraayenhof, pianist Jeremy Denk and the Cuban band Tiempo Libre.