The group has released three music videos for the album: "Shampoo", "Let's Step Up", and "Play Ur Love".

Following the admission of ninth member, E-Young, Pledis Entertainment announced that After School will be having a comeback at the end of April 2011.

[citation needed] On 18 April 2011, Pledis released a photo teaser of the album, featuring fourth generation member E-young.

On the day before the album's release, Pledis uploaded the video of their lead track "Shampoo" and "Let's Step Up!"

Two of the new tracks, "Lean on Time" and "My Bell" are solo songs sung by main vocal members Raina and Jungah.