To promote the release of
Exodus, a series of videos referred to as "Pathcode", featuring one Exo member each and are set in various locations, were released on
YouTube. The first letters of these locations' names—
Colorado,
Arizona,
London,
Lyon,
Marseille,
Edinburgh,
Barcelona,
Almaty,
Berlin and
Yunnan—would spell "Call Me Baby", the title of the album's lead single. It was released digitally on March 27, 2015, three days ahead of the album. Exo began performing the song on South Korean music TV shows on April 2, 2015. After the press conference for the album's release, member
Tao was absent from promotional activities and would later withdraw from the group, making "Call Me Baby" the last Exo single he participated in. ==Music video==