やなぎなぎ
The game's background music was written by Australian composer Kevin Penkin. Famed "Final Fantasy" series composer Nobuo Uematsu wrote the game's main theme, which was arranged by Penkin. Three pieces of theme music are used throughout the game. The opening is "melee", the ending theme is "many universes", and the insert song is . All three songs are performed by Nagi Yanagi. For "Norn9: Last Era", the opening theme is "foe" while the ending theme is "skyscape". Both songs are also performed by Yanagi.