Koe (聲) is the main theme song of Fatal Frame III: The Tormented. The vocals are sung by Tsukiko Amano and was first released in the eponymous single, Koe, on July 27, 2005 before being included in Amano’s later albums. The song can be heard during the ending and credit roll of Fatal Frame III, as well as in early theatrical previews of the game.

Chou (蝶) is the main vocal song and theme of Fatal Frame II: Crimson Butterfly. The song is sung by Japanese artist Tsukiko Amano and is used in the game’s ending, closing credits and preview trailers. Tsukiko Amano 1 Chou was first released in a single of the same name in November 12, 2003. It was later featured in a few of Tsukiko Amano’s subsequent albums, beginning with Tenryuu.