Whittling down 2015's best country songs (so far) was no easy feat. After all, some of country's biggest stars, not to mention a few talented newcomers, have released singles and fan-favorite songs this year. Can't we just say that all of them are the best?

The Boot sifted through a slew of new tunes to determine what we believe to be the Top 5 new country songs of 2015 thus far. We think our picks -- a couple ballads, an acoustic song and a rock 'n' roll country tune -- are surprising and unique: A few have broken records, one has stirred up a whole lot of controversy, and one features a brand-spanking-new artist who has a bright future ahead of herself.

  • 5

    "Heavy Is the Head"

    Zac Brown Band

    The Zac Brown Band's new record, Jekyll + Hyde, was released on April 28 and features 16 tracks, including "Heavy Is the Head." The song has major rock influences, and fans got to see it played live on SNL when ZBB performed on the show in March (before the album was even out!). One of our favorite things about this song -- aside from its guest vocals from Chris Cornell; heavy, fuzzy guitar line and fiddle; and Brown's on-point vocals -- is that rock fans dig it too! "Heavy Is the Head" hit No. 1 on the Billboard Mainstream Rock Songs chart, making ZBB only the second musical act (Bon Jovi is the other) to have a No. 1 single on that chart the and Country Airplay chart.

  • 4

    "Biscuits"

    Kacey Musgraves

    Musgraves' highly anticipated debut single from her (also highly anticipated) forthcoming sophomore record, Pageant Material, goes down easy -- like, well, biscuits and gravy. The song "Biscuits" is as fun and quirky as Musgraves ... but also really intelligent. The chorus is proof of her lyricical genius: “Just hoe your own row and raise your own babies / Smoke your own smoke and grow your own daisies,” she sings in the chorus. “Mend your own fences and own your own crazy / Mind your own biscuits, and life will be gravy.” How can you not love that? Pass the biscuits and gravy, please!

  • 3

    "Better Than You Left Me"

    Mickey Guyton

    We're better now that we've heard this song. Country newcomer Guyton is barely out of the gate, but she's already made big waves with her debut single, "Better Than You Left Me." The song had an astounding 79 adds at country radio on the day of its release, giving Guyton the highest one-week add total on a debut release in Country Aircheck history. The tune features Guyton's bigger-than-life vocals and empowers anyone who's gone through getting their heart broken and come away from it stronger.

  • 2

    "Like a Wrecking Ball"

    Eric Church

    Church surprised fans with an acoustic tune for his fifth single from The Outsiders -- and we love it. "Like a Wrecking Ball," as Church says succinctly, “[is] about … It’s about sex.” The singer is not known for shying away from taking chances, and the steamy song doesn't even make Church blush. “That whole house is gonna be shakin’ / I hope those bricks and boards can take it,” he sings.

  • 1

    "Girl Crush"

    Little Big Town

    All controversy aside, Little Big Town's "Girl Crush" is simply a fantastic song. Even though, yes, there were haters, the tune had 2015's best sales week, and fans and country stars alike stepped up to show their support for the now-gold-certified tune. "Girl Crush" a jealousy song from a hugely interesting (and surprising) perspective, and LBT's harmonious vocals make it a grand slam every time.

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