Liturgical reforms of Pope Pius XII
The liturgical reforms of Pope Pius XII continued a process initiated by Pope Pius X, who began the process of encouraging the faithful to a meaningful participation in the liturgy. Pope Pius XII redefined liturgy in light of his previous encyclical Mystici corporis and reformed several liturgical practices in light of this teaching. The liturgical teaching of Pius XII is contained especially in his encyclical Mediator Dei of 1947. Although Pius XII felt compelled to reprove the desire for novelty among certain leaders of the Liturgical Movement, the liturgical reforms undertaken later in his pontificate were in fact relatively broad in their scope.