On February 15, A Pink members Chorong, Eunji, Namjoo, and Hayoung appeared as guests on the KBS2 variety program, 'Problem Child In House.' On this day, the girls spent time answering various quiz questions and also shared some of the behind stories during their promotion.

In fact, the girls shared the back story of one of the lesser-known songs, "Hush," and shared why the song is not mentioned or performed during their concerts. Hayoung started off by saying, "We decided to change directions for the first time back then." Chorong elaborated, "that was when it hasn't been long since we debuted but then our CEO suddenly got absorbed with the retro theme." Eunji also added, "That was when T-ara Sunbaenims released their hit song 'Roly-Poly' so there was a retro theme trend." 

The members shared that the group was scared of the song because it did not fit the concept they debuted with. Since A Pink debuted with the pure, innocent concept, the members were worried that this sudden change in concept would not be well accepted. Chorong explained that she protested to the company as the group leader, but the agency didn't listen, and the girls had to release the song. Therefore, the song is not performed as much in concerts compared to the other songs they released.

Nevertheless, Jung Hyung Don asked the A Pink members to show a bit of the dance to the song. At first, the members claimed they didn't remember the song, but Chorong, Eunji, Namjoo, and Hayoung all got up and began dancing as soon as the song came on. Song Eun Hee praised the song for being good and pointed out that MC Kim Yong Man was already grooving to the song. Everyone burst out in laughter when Hayoung added, "Yes, that's why my grandpa really liked this song."