I initially found myself relating to Llewyn Davis’ difficulties—it's hard to imagine a musician who wouldn't—but as the movie progressed, I came to see how many of those problems he creates for himself. It seems likely that Llewyn will repeat these patterns again and again before anything improves or reaches a low point. Musically, his style feels raw and full of feeling. He’s exactly who I would want singing those melancholy folk songs, especially when put up against the more polished musicians he encounters. However, that depth appears to stem from hardships—like the suicide of a former musical collaborator—and worries about family and past relationships that he's too resistant or emotionally limited to resolve. He manages to get by because people keep helping him out; places to sleep are always available, even after he’s rude to the hosts. A club owner continues to give him gigs, despite his disruptive behavior towards other performers. Recognizing you’re trapped in a recurring pattern is challenging while you're still struggling through it, and it becomes even more so when forming connections is as difficult as it is for Llewyn. It seems the Coen brothers grasp this reality and treat it with gravity, yet they’ve also produced something that made me laugh and completely absorbed my attention.

Source on TMDB