Ms. Chikako (Veronika) Hashimoto has studied singing at the Music University of Musashino, Japan. Subsequently she did her study of church music at the Music University in Cologne, Germany, of baroque chant with Rune Jakobs and Cembalo with Anne Marie Bohne. As a disciple of Luigi Agustoni, she focused on Gregorian Chant. She followed the courses by Johannes B. Göschl in St. Ottilien and Essen and since 1994 deepened her knowledge of Gregorian semiology with Godehard Joppich.

In 1979 Hashimoto founded the St. Gregory Institute for Religious Music in Tokyo; since then she has been teaching church music and conducting the choir of St. Gregory, Tokyo.