Music, to be suitable for congregational use, must clearly possess certain distinguishing qualities, which it will be wise to try and define at the outset. Firstly it must be simple. Even in parishes where no prejudice against congregational singing exists to be overcome, it is necessary both to avoid the discouragement caused by attempting music too elaborate mclodically, too complex rhythmically, or of too great vocal compass; and to avoid, even worse, complacency in the unworthy performance of too difficult works. Secondly, it should be sufficiently appreciable in terms of current musical idioms to embody the virtues of popularity.