Aidin Vaziri | “If you don’t have two kids by 21 / You’re probably going to die alone,” sings Kacey Musgraves on “Merry Go ‘Round,” the breakout hit from her major-label debut album, “Same Trailer Different Park.” On the surface, the 24-year-old Texas native’s low-key country songs may sound like Taylor Swift before she discovered dubstep. But things are a lot more complicated in Musgraves’ world, which stretches beyond the pages of her journal and into dark corners and lonely bedrooms. We are never ever, ever getting back together? Try “Stupid,” her decidedly more practical take on the toll of relationships: “I drink to feel / I smoke to breathe / Just look what love / Has done to me.” Musgraves’ earthy voice, barbed sentiments and widescreen melodies have the capability of evoking greats like Loretta Lynn and Tammy Wynette. The best part is that as the opening act on Kenny Chesney’s current stadium tour, she gets to win over thousands of broken hearts every night.