The PSY came back with 'CHILJIP CIDER' about 3 years and 5months after the last regular album "Yukgap Boys".
The word 'CIDER' contains coolness, excitement and existence. This word is odd but enough to show it's ambiguos meaning.

In order to fulfill its mission as a pop singer, and in order to finish the 2015 with full of energy,
he came back with the regular album, nine songs, not with the digital single.

Confident as a "lyricist and composer", made him to release his song 6days earlier than the release date of the offline album.
Fans could feel his desire to breathe as a pop singer to show his passion to the fans with his new songs.
The coolness when we drink 'CHILJIP CIDER'. Maybe it's just the feeling, when you drink CIDER, that PSY wants to deliver through this album.