Greatest Hits is the second greatest hits album by Danish-Norwegian pop band Aqua. The album was released on 15 June 2009, on Universal. Although it is their second greatest hits album, it is the first one to be released internationally, with Cartoon Heroes: The Best of Aqua (2002) only being released in Japan. The compilation was not released on any physical or digital format in North America. Greatest Hits includes digitally remastered versions of sixteen songs from Aqua's two previous studio albums, Aquarium (1997) and Aquarius (2000), and three new songs: "Back to the 80s", "My Mamma Said", and "Live Fast – Die Young". "Back to the 80s" was released as the album's lead single on 25 May 2009. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.