Welcome to Top Track, the series where you—the fans!—get to decide which of your fave’s many singles is the best one ever. It may not be an easy decision to make, but we all have that one favorite single from our favorite artists. Which one is yours? Make your voice heard, below!

After breaking out in a big way on The X Factor in 2012, Fifth Harmony have since solidified themselves as one of the most successful and loved pop girl groups, releasing (so far, anyway) nine official powerhouse singles across two—soon to be three—studio albums.

From dance bangers to emotional ballads, Fifth Harmony have you covered: Whether it’s their electro-pop girl power anthem, “That's My Girl," or their latest sexy pop-R&B jam, “Down," Lauren, Ally Brooke, Normani and Dinah Jane know how to slam it down like a "Sledgehammer." But which single is their best track ever?

Place your vote below! Voting closes Sunday, August 13 at midnight. The winning Top Track will be announced here, so be sure to check back!

Fifth Harmony's Best Live Vocals:

Fifth Harmony Through the Years: