Ryuichi Sakamoto's single CD "Ura BTTB" Released on May 26, 1999. It includes three songs: "energy flow," "put your hands up (piano version)," and "Poppoya (piano version)." "energy flow" was the commercial song for Sankyo (now Daiichi Sankyo Healthcare)'s "Regain EB Tablets." "put your hands up (piano version)" was the theme song for the TBS television program "Tetsuya Chikushi NEWS23." "Poppoya (piano version)" was the theme song for the movie "Poppoya" starring Ken Takakura.