What makes Sledgehammer (Fifth Harmony song) by Fifth Harmony notable?

'Sledgehammer' peaked at number 40 on the Billboard Hot 100 and was praised for its vocal performances and production quality. The song marked a significant moment for Fifth Harmony, solidifying their place in the pop landscape and setting the stage for their subsequent successes. Released on October 28, 2014, 'Sledgehammer' was the lead single from Fifth Harmony's debut studio album, 'Reflection.' At this point in their career, the group was transitioning from their formation on 'The X Factor' to establishing themselves as a prominent force in pop music.