The Blue is the fifth extended play by South Korean girl group April.

It was released on March 12, 2018 by DSP Media and distributed by LOEN Entertainment.

On February 26, 2018, DSP Media confirmed that April's comeback was set for March 12.

[6] On March 7, the MV teaser for the lead single "The Blue Bird" was posted on the group's YouTube channel.

[8] The official video for "The Blue Bird" was posted on the group's YouTube channel on March 12.