 The album included "Carry On" and "CLOWN", which were also released on the soundtrack for the series Muv-Luv.Masaaki Endoh released ENSON and ENSON2 in the summer of 2008, which proved to be a massive success.The album contained covers of popular anime opening themes in the late 1990s and early 2000s, including "Uninstall" by Chiaki Ishikawa and "Sousei no Aquarion" by Akino.