The group's debut mini album, Oh My Girl, was released on April 20, 2015.

On October 8, 2015, their second extended play titled Closer was released.

The group's third mini album, Pink Ocean was released on March 28, 2016, along with its lead single "Liar Liar".

After almost 2 months, they released a repackage album of Pink Ocean, titled Windy Day with two additional tracks and a Chinese version of "Liar Liar".

On August 1, 2016, they released Listen to My Word, a special summer album containing four remake songs, including Papaya's "Listen to My Word (A-ing)" featuring Skull and Haha.