Keiji Kojima graduated from the Musashino Academia Musicae.
He studied trumpet under Mr.Sumiaki Arima, Mr.Isao Fukui, and Mr.Naohiro Tsuken.
Currently, He is a head of TOOT BRASS! (Brass Ensemble) concert master of Tokyo Wow! Wind Ensemble and a head of Ensemble Soleil Le Van.
He is also a judge of the contest and he is much sought after as a band clinician and music consultant by many schools in Japan.