31. Miranda Lambert, 'Four the Record'
"It takes all kinds of kinds," Lambert sings – and proves it. Four gives us all kinds of Mirandas: from honky-tonk traditionalist ("Same Old You") to sonic experimenter (the hazy, half-drunk daydream "Fine Tune") to loving wife ("Better in the Long Run," with Blake Shelton). Even so, it's her most easeful and assured effort yet.