Sakaguchi Gentaro is the acting assistant violist at the NHK Symphony Orchestra. He completed the chamber music course (viola and piano duo) at the Graduate School of Music, Tokyo University of the Arts. Sakaguchi won Third Prize and the Encouragement Prize at the 9th Japan Chamber Music Competition (duo with pianist Harada Kyoko). He is a member of Aperto String Quartet and the Chamber Orchestra by members of NHK Symphony Orchestra. Sakaguchi studied the viola with Nakatsuka Yoshiaki and viola and piano duo with Matsubara Katsuya.