What is a fanlisting?
According to http://www.thefanlistings.org/,"a fanlisting is simply an online listing of fans of a subject, such as a TV show, actor, or musician, that is created by an individual and open for fans from around the world to join. There are no costs, and the only requirements to join a fanlisting are your name and country. Fanlistings do not have to be large sites (although some are) - they are just a place where you can have your name listed along with other fans of the same subject. TheFanlistings.org is the original (but not official) web directory for fanlistings, dedicated to uniting the fans."
This particular fanlisting is for The Hades Cup from Kingdom Hearts II.
What's Kingdom Hearts?
How could you not possibly know? Kingdom Hearts is a videogame that Disney and Square Enix joined together to create. Sora, the weilder of the Keyblade starts a journey to find his friends and restore the worlds that the Heartless have destroyed. He is joined by Donald and Goofy who are looking for the King, Mickey Mouse.
What's The Under the Sea Minigame?
In Kingdom Hearts II when you visit Atlantica you can play minigames where you hit certain buttons at a certain time to make Sebastian, Ariel, and friends sing and dance to the lyrics of a song. One of those songs is Under the Sea.
Kingdom Hearts, The Little Mermaid, and related characters are copyright of Disney, Sqaure Enix, and Hans Christian Anderson. This is simply a fanlisting.