Their label revealed, "Girl's Day is planning to have a comeback with a special season song by the producer team Duble Sidekick. This album was specially planned for Girl's Day's 4th anniversary on July 9th."
The girls promoted "Something" 6 months ago, a song also by Duble Sidekick. Since "Something" was such a big hit, they're hoping to see the same chemistry again.
The label added, "The album will be a mini album. It's not only a 4th anniversary album, but also a summer special album, and it'll be full of bright, lively music. Girl's Day is also preparing a special event with this album release so they can give the love back to their fans."