Query: How old was the mass reformed by Paul VI?
Context: These major reforms were not welcomed by all and in all countries. The sudden apparent "outlawing" of the 400-year-old Mass, the last typical edition of which being promulgated only a few years earlier in 1962 by Paul's predecessor, Pope John XXIII, was not always explained well. Further experimentation with the new Mass by liturgists, such as the usage of pop/folk music (as opposed to the Gregorian Chant advocated by Pope Pius X), along with concurrent changes in the order of sanctuaries, was viewed by some as vandalism.