Tea Partiers know him as Jon David, the guy with the guitar whose song “American Heart” has become an anthem for the movement. “I got American parts / Got American faith / In America's heart,” he croons at rallies around the country, semi-disguised by hat and sunglasses. The singer's been undercover and using a pseudonym, afraid to reveal his true identity lest he jeopardize his Hollywood career. Until now.
                                    
                                    
                                
                                
                             
                            
                            
                            
                            
                            
                                
                                
                                    
                                        David took off the glasses for the  Wall Street Journal, revealing his true identity:   Jonathan Kahn, the screenwriter and director of, ahem, not a whole lot, based on his IMDB page. But he's still risking his career by coming out, various Hollywood conservatives insist. “I mean, he's a member of a huge, Democratic liberal organization called the Los Angeles entertainment business,” says one record producer he's worked with. “It's very wise he's going incognito.”