Every Fifth Harmony Album You Need to Remember (Until They Reunite)

This first studio album went platinum according to the RIAA ratings and made quite a few "best of pop" lists for 2015. The breakout singles include "Boss" and "Sledgehammer," but the biggie is "Worth It" featuring Kid Ink, which is one of the group's highest-charting singles, reaching No. 12 in the US and Canada, No. 9 in Australia, and No. 3 in the UK.