Hiiragi ひいらぎ Holly Is A Female Japanese Folk Duo Signed To Sony Music Records. They Began As A Trio But Then Continued As A Duo Starting With Their Second Single "Kakera" In August 2009. Members Current Members Chiaki 千晶 – Vocals Guitar Erika 恵梨香 – Chorus Guitar Harmonica Former Members Manami 愛美 – Chorus Harmonica Melodica