"Crush" is a song by South Korean girl group I.O.I. It was released online … Read Full Bio ↴"Crush" is a song by South Korean girl group I.O.I. It was released online as a digital single on April 5, 2016 through CJ E&M.

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.

In the final episode, which was broadcast live on April 1, 2016, the remaining 22 contestants performed the song as their final assessment, after which viewers voted for their favorite contestant. After the voting period, the top 11 contestants were announced and became the members of the new group I.O.I. The members of I.O.I then recorded "Crush", which was released as a pre-debut single on April 5. The music video for the song was released the same day.