On November 9 , 2014 , Fifth Harmony performed " Sledgehammer " for the first time at the pre-show of the 2014 MTV Europe Music Awards . The following week , the group performed the song on '' Good Morning America '' and performed an acoustic version on '' Access Hollywood Live '' . Nearly a month later , the group performed a stripped down jazz version on VH1 's '' Big Morning Buzz Live '' and closed the year by performing the song on " Pitbull 's New Year 's Revolution " that aired on Fox . Upon the release of '' Reflection '' , the group performed the song on '' The Today Show '' on February 3 , 2015 and on '' The Talk '' . Several weeks later , the group presented the song on '' Sunrise '' while promoting the album in Australia and on '' The Ellen DeGeneres Show '' . Sledgehammer also appeared on the set list for Fifth Harmony 's performances at the 2015 New York , New York ; Atlanta , Georgia ; Chicago , Illinois ; and Sunrise , Florida Jingle Ball concerts . It was also included on the setlist for the group 's headlined international tours , the Reflection Tour and the 7/27 Tour
2014 MTV Europe Music Awards
2014 MTV Europe Music Awards
Sledgehammer (Fifth Harmony song)