Discography
↑「Maya Than This」Ichiro pat Koizumi(2015)
↑「Kachi Kachi Utamaro」qps × Nakazataro(2014)
↑「Yumekibou」π π man(Tatsuya Kikuchi × Koizumi pat Ichiro)(2014)
↑「tanabata」qps(Kosaku Abe × Koizumi pat Ichiro)(2014)
↑「north picco」micco & Koizumi pat Ichiro(2013)
↑「Hatsukoi」qps(2013)
↑「Free Painting」qps(2012)
↑「Free CD」qps(2012)
↑「Fan Roading」qps(2011)
↑「Hatachi Ni Nattanoni」qps(2011)
↑「Light House Song」qps(2011)
↑「Free Painting」qps(2011)