미행 (그림자 : Shadow) - song and lyrics by f(x) | Spotify 미행 (그림자 : Shadow) - song and lyrics by f(x) | Spotify Goodbye Summer (f(Amber+Luna+Krystal)) - song and lyrics by f(x), D.O. | Spotify 시그널 (Signal) - song and lyrics by f(x) | Spotify 櫻井美羽さんの顔と綺麗な綺麗な声に触れていると頭の中をクリスタルさんがかすめることがあるので、本当ならば櫻井美羽さんにDim…