Ibiza can refer to one of two things...
1. The small island off the coast of Spain in the Balearic Islands which is home to some of the best nightclubs in the world (eg. Privilege, Es Paradis, Amnesia, Space, Pacha, Eden, and DC10). Eivissa is the islands official name, but most english speakers call it Ibiza
2. A
sub-genre of trance
music. It is characterized by it's euphoric, hypnotic beats and uplifting melodies. It also uses sounds such as guitars, mandolins, waves, wispy vocals, and synthesizers.
Popular songs in this genre include
Beachball by Nalin &
Kane
Seven Cities by Solar
Stone
Offshore by Chicane
Devil Went Down To Ibiza by Alabama 3
First State by First State