• My will - Kohei by SIMONSAYZ - 2022-05-11
• heart to heart - Kohei by SIMONSAYZ - 2022-04-13
• また会える - Kohei by SIMONSAYZ - 2021-11-24
• 風のキズナ - Kohei by SIMONSAYZ - 2021-07-21
• SUNDAY - Kohei by SIMONSAYZ - 2021-03-31
• WELCOME U - Kohei by SIMONSAYZ - 2021-01-13
• GET STARTED - Kohei by SIMONSAYZ - 2020-11-25
• 1ページ目のLOVE STORY ～夏恋～ - Kohei by SIMONSAYZ - 2020-07-15
• せっけんWOW! - Kohei by SIMONSAYZ - 2020-03-18
• 空中恋愛論 - Kohei by SIMONSAYZ - 2019-12-11
• T.D.D LEGEND - Kohei by SIMONSAYZ、R・O・N - 2019-02-27
• 畢生の荒波をゆけ - Kohei by SIMONSAYZ - 2018-12-19
• HOME - Kohei by SIMONSAYZ - 2018-12-19
• 風のキズナ - Kohei by SIMONSAYZ - 2018-12-05
• Knock Knock Knock - Kohei by SIMONSAYZ - 2018-10-24
• MOVING - Kohei by SIMONSAYZ - 2018-02-14
• Carry on - Kohei by SIMONSAYZ - 2017-09-06
• ショコラ・エトワール - Kohei by SIMONSAYZ - 2017-04-26
• Nervous-aid - Kohei by SIMONSAYZ - 2017-04-05
• 君とShooting star 霧島司センターver. - Kohei by SIMONSAYZ - 2017-03-29
• till the morning comes - Kohei by SIMONSAYZ - 2017-02-08
• FIRE - Kohei by SIMONSAYZ - 2017-01-25
• sun will rise - Kohei by SIMONSAYZ・LEE - 2016-05-18
• Growing - Kohei by SIMONSAYZ・LEE - 2016-05-18
• my life my time (GLIND HOP) - Kohei by SIMONSAYZ - 2015-08-26
• U R my Sunshine! - Kohei by SIMONSAYZ - 2013-09-18
• HEY!!! - Kohei by SIMONSAYZ - 2013-02-13
• Hikari - Kohei by SIMONSAYZ - 2012-02-15
• Number One - Kohei by SIMONSAYZ - 2010-11-24
• my life my time - Kohei by SIMONSAYZ - 2010-11-24