The most significant country artist to emerge in the early years of the 21st century, Miranda Lambert has parlayed her early success as a reality TV contestant into an unpredictable career that simultaneously defined and defied the conventions of mainstream country in the 2000s and beyond. Whether it was rabble-rousing outlaw rockers or glammy pop in the vein of Shania Twain, Lambert didn't reject Nashville traditions so much as enliven and personalize them. All of this was evident on Kerosene, the debut she released in 2005, but it was her 2007 sequel, Crazy Ex-Girlfriend, an...