In many ways, Kelsea Ballerini is the quintessential millennial country singer. Since her arrival in 2014, she's proven herself a musical polymath whose full-bodied vocals bring together modern pop, R&B, and country with a naturalness that suggests she's been steeped in this blend since birth rather than consciously melding genres together. She's the kind of singer who sounds just as comfortable joining New York EDM duo The Chainsmokers on the club-friendly "This Feeling" as she does tucking into a majestically melodic power ballad like "First Time Again" with country superstar Jason Aldean.