Jo Kwon
Beside from her activities with the group, she also had solo activities, beginning with her appearance in 4Tomorrow, a collaboration project with 4Minute's Hyuna, After School's Uee and KARA's Han Seung-yeon. She also released a digital single, titled "We Fell in Love" (우리 사랑하게 됐어요) with then "We Got Married" partner 2AM Jo Kwon, composed by fellow member JeA, Kim Eana and produced by Lee Min-soo. The duet became a massive success, being her longest running number one hit on Gaon Chart.