[Secret Heart ] Lyrics/Maiko Nakamura,Taka Aoki Compose & Arrangement,Produce /Taka Aoki (tiny step records) Piano/Hatanaka Ayako GutGuitar/Tatsuya Morinaga All Sound Programming&Recorded by Taka Aoki Mixed by Yousuke Nishikawa (IRISOHYAMA)TV commercial song(2016)