秘密警察 (Himitsu Keisatsu / Secret Police) is a single by Buriru-P and released by KarenT. The song, "秘密警察 (Himitsu Keisatsu)", is sung by Hatsune Miku. It is Buriru-P's most famous song, being featured in the Hatsune Miku -Project DIVA- f videogame. The single is purchasable on Amazon and iTunes (ENG & JP).