The guitar resonates loudly in Rolling Stone Country's spring installment of Artists You Need to Know. There's a farm-girl-turned-country-rocker who would give Keith Urban a run for his money; a high-haired young gun on tour with Tim McGraw; a shredding Americana duo with a T Bone Burnett-produced debut; and a mother-and-son group — yes, mother and son — who blend howling blues with acoustic picking. The artists who don't play make up for it by having monster voices. Here are the 10 new country artists you absolutely have to hear right now.