MasayaYamaguchi (born July 18 1970) is a musician and educator residing in Manhattan, New York City. Since moving to New York in 1996, Masaya has been active as an author, guitarist andeducator in and around New York City.Masaya Yamaguchi became the first native Japanese to complete the master'sprogram in Jazz Performance at the City College of New York (M.A. 1999).Regarding his first work The Complete Thesaurus of Musical Scales, JazzEducation Journal wrote, "It's worth mentioning that this bookcomprehensively covers all theoretical possibilities in constructing scales(July-August 2002)." His biographical profile can be found in MARQUIS Who'sWho in America(2004-), Who's Who in the World (2005-) and Who's Who of Emerging Leaders(2007-).