“Crush” is a song by South Korean girl group I.O.I.

CJ E&M formed I.O.I through the reality competition series Produce 101 on Mnet.
The song “Crush” was announced to be the debut song for the winners of the series.
However, shortly before the end of the series, YMC Entertainment and Mnet decided to postpone the debut of I.O.I until May to give the group more time to prepare. They decided that “Crush” would be released as a pre-debut single by I.O.I after the conclusion of Produce 101.

The members of I.O.I then recorded “Crush”, which was released as a pre-debut single on April 5, 2016 through CJ E&M label and the music video for the song was released the same day.