There are five bands by the name of Adelaide: One is a energy/rock band from St. Louis, MO
http://www.myspace.com/adelaidestl One is a post-rock band from Portland, OR, now known as Small Sails
http://www.last.fm/music/Small+Sails One is a deathcore band from Columbia, TN
http://www.myspace.com/adelaidetn One is a post/alternative band from Buffalo, NY One is an ambient/pop/rock band from South East London.
http://www.myspace.com/adelaideuk

Read more about Adelaide on Last.fm.