72 So that the desired effect may be produced by what We have recommended and ordered in this encyclical, following in the footsteps of Our predecessors, you, venerable brethren, must carefully use all the aids offered by the lofty function entrusted to you by Christ the Lord and committed to you by the Church. As experience teaches, these aids are employed to great advantage in many churches throughout the Christian world.
Source: Musicae Sacrae (Vatican.va)