The girls from Fifth Harmony return with a grown-up look in the glamorous visual for "Sledgehammer". The sweet love song was written by Meghan Trainor and produced by Jonas Jeberg and Ricky Reed. The synth-pop track serves as the second official single from the Miami-based girl group's debut studio album 'Reflection', set to be released on January 27, 2015 by Syco Music and Epic Records. Lyrically the song is about the kind of love that just can't be contained because when you're with the person your heart can't help but beat like a sledgehammer. The Fatima Robinson-directed music video shows the five young divas, dressed in all-white outfits, resting majestically on a stage next to a unicorn sculpture as well as pouting from suspended swings. The clip also features a silhouetted man pounding on barrels with two sledgehammers.