The soundtrack to Nier was composed by a collaboration of the studio Monaca, consisting of Keiichi Okabe, Kakeru Ishihama, and Keigo Hoashi, along with Takafumi Nishimura from Cavia, the game's developer.
Okabe did not want to use traditional lyrics, as he felt they would clash with the design of the world in the game, and wanted to use a variety of languages to represent the open nature of the game's world.