By compelling audiences to listen more closely, “No Country for Old Men” has had the effect of calling attention to an underappreciated aspect of filmmaking: the use of sound.
The article makes note of the lack of music in the sound design. Years of being manipulated by music have left us ready for this trend. I first noted it in 4 Months, 3 Weeks and 2 Days when I saw it this past summer at the Toronto International Film Festival.