Silver Jews is coming to town. On just the second tour of a 20-year career, DC Berman and his familial touring band will visit LA tonight behind its sixth recording, Lookout Mountain, Lookout Sea. Berman answered a handful of questions from the road, via e-mail. How do you write songs? I build their walls and then lay siege to them for weeks. It's a dialectic between the artistic voice and the critical voice in......