Gaon Singles Chart
"Athena" was digitally released on December 20, 2010, and debuted at number 50 on the weekly Gaon Singles Chart. The music video for the album's lead single "Keep Your Head Down", officially premiered on January 3, 2011. The single debuted at number 5 on the weekly Gaon Singles Chart. "Journey", the theme song for Changmin's television drama "Paradise Ranch", was released on January 26, 2011 and only managed to peak at number 111 on the Gaon Singles Chart.