My wife and I saw this at the True/False documentary film festival in Columbia, Mo. I was reluctant to see a movie with the word "hillbilly" in the title, but this turned out to be an engaging look at Big Smith, a terrific and difficult-to-classify band out of the Springfield area. Front man Mark Bilyeu is a smart and articulate guide to the region's musical traditions, which have yielded everything to the hillbilly kitsch of Branson's The Baldknobbers to, well, Big Smith.
The soundtrack, of course, is terrific, and includes recordings from live performances as well as studio tracks. Big Smith's ouevre is a blend of country, gospel, bluegrass, folk and rockabilly.