Here's a chat with Jack Antonoff, guitarist in Fun, founding member of Bleachers, and an in-demand songwriter/producer whose credits include Lorde, Lana Del Rey, Taylor Swift, St. Vincent, and more. Jack talks about his new Bleacher's song, 'Chinatown' (featuring Bruce Springsteen), the cultural importance of the Holland Tunnel, the melody and mystery of the band Sparks, and is he the Leonardo DiCaprio of music?