KAiiDA is a Japanese singer under Lemurian Label. She is best know for her work with Kajiura Yuki. She started working for Kajiura, in 2001, for the anime NOIR soundtrack.I t is not rare to hear her voice in Kajiura's soundtracks as well as other projects such as FictionJunction and Kalafina.
Yuriko Kaida first collaborated with Kajiura for the Noir anime soundtrack, in which she sang the songs that helped launched Kajiura's career: "canta per me," "salva nos" and "lullaby." Since then Yuriko Kaida has provided vocals for many of Kajiura’s works, mainly as background chorus. Kaida became a main FictionJunction vocalist until 2009, upon the release of the album "Everlasting Songs" and the single "Parallel Hearts", lending her voice to “here we stand in the morning dew” and “Himitsu” in "Everlasting Songs" and providing vocals throughout the album.