Quintessential Coen brothers fare, but different. Inside Llewyn Davis has a certain kinship with Les Misérables. In it almost all the principal actors, Oscar Isaac, Carey Mulligan, Justin Timberlake, sing. While not quite a musical, Inside Llewyn Davis is, built around full-length performances of folk songs that were, heard in the grubby cafes of the Village in a year when Bob Dylan, who kind of, sort of shows up in the movie, had just appeared on...