chants of the Roman Gradual, as well as other chants and hymns and instructions on the proper way to sing them.

In 1974, after the Second Vatican Council an edition of the Roman Gradual based on that of 1908 was issued. While the melodies remained unchanged, there was a relocation of pieces to fit the revised Roman Missal and calendar. Some chants were replaced by ancient ones rediscovered after 1908. A simpler gradual for small churches or inexperienced