This was Koto Ensemble Toiro’s first concert hall performance. Under the concept of bringing a full-fledged performance undertaken by young professionals to a wide audience, the ensemble played a range of works from traditional koto pieces to new compositions being performed for the first time. Performers comprised six members of Koto Ensemble Toiro (Sakiko Endo,　Chihiro Kakihara, Nanako Fujishige, Yumeko Machida, Kikue Yamawaki, and Asuka Wakisaka) as well as shakuhachi performer Eizan Yoshikoshi. The program consisted of six pieces: “Koto Shijuusoukyoku,” “Ochiba　no Odori,” “ UNLEASH,” “Shin Aoyagi,” “Hyakkafu,” and “Passacaglia and Allegro for koto ensemble.”The new piece that was premiered, “Passacaglia and Allegro for koto ensemble,”was composed by Mariko Endo. As a new experiment for a koto concert, two types of concert program were created for distribution: one a regular concert program, and the other designed for koto novices with commentary by Koto Ensemble Toiro members themselves, with the aim of making the concert easy to understand even for people seeing koto for the first time.