Lista de canciones del álbum
>Music is the Key - Miraieno kagi (P) 2000(1),2002(3,5,8),2003(2,9),2006(6),2008(16),2011(11),2013(14),2015(4,12),2016(7,15),2017(10,13) Sony Music Labels Inc./(P) 2000(7),2001(16),2002(5,10),2004(3,9),2006(1),2008(14),2011(6),2013(13),2015(4,11),2017(12),2020(2,8) Sony Music Labels Inc. / 2021(15) TOKU Inc.,