GIA Publications

GIA Publications, Inc. is a major publisher of hymnals, other sacred music, and music education materials that is currently located in Chicago. The organization was initially the publishing arm of the Gregorian Institute of America (1941–1965); a school affiliated with the Roman Catholic Church that was initially established in Pittsburgh but operated for the majority of its history in Toledo, Ohio. The school specialized in training choral conductors in the methods of teaching choirs to sing Gregorian chant. After the school's closure following the Second Vatican Council, the publishing part of the school was sold to the Harris family. Provided by Wikipedia