The Meghan Trainor-penned track "Sledgehammer" is Fifth Harmony's first Top 40 hit on the BB Hot 100

Congrats #Harmonizers! @FifthHarmony just notched its first Top 40 hit on the Hot 100 with 'Sledgehammer' http://t.co/UtVjNb2qgG

— billboard (@billboard) January 2, 2015

Fifth Harmony fans rejoice! Fifth Harmony are FINALLY happening and it's all because of Meghan Trainor, who also has 4 songs in the Hot 100.



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