Exology Chapter 1: The Lost Planet (stylized as EXOLOGY CHAPTER 1: THE LOST PLANET) is the first live album by South Korean boy band EXO. It was released on December 22, 2014 by S.M. Entertainment. It has 2 CDs and a total of 36 songs (1 CD and 18 songs), including individual tracks from each of the members and studio versions of some of his songs remixed (remix Korean and Mandarin/ Mandarin and Korean). The album was released in two versions: a normal version and a special version.