 The music of Final Fantasy XI was scored by Nobuo Uematsu , Naoshi Mizuta , and Kumi Tanioka . Composer Yasunori Mitsuda was also asked to contribute , but he was busy scoring Xenosaga . The expansion packs were scored by Mizuta alone after Tanioka left to pursue other projects and Uematsu left Square Enix , although their names remain in the credits for those albums due to the inclusion of versions of songs they had previously composed for the game . The opening of the game features choral music with lyrics in Esperanto . According to Uematsu , the choice of language was meant to symbolize the developers ' hope that their online game could contribute to cross @-@ cultural communication and cooperation . He also noted the increased difficulty of scoring a game for which there was no linear plotline , a major change from the previous Final Fantasy games . It was the first game in the series for which he composed while he was no longer a Square employee . New music has been employed for special events , such as a holiday score titled Jeuno <unk> <unk> which can be heard in the city of Jeuno each mid to late December since 2004 . Some of the game 's music has been released on iTunes for download , such as the vocal " Distant Worlds " , which was released on the Japanese iTunes Music Store on September 13 , 2005 , having been put in the game in a July 2005 patch . 
