De Musica Sacra, the 1958 instruction on sacred music for the liturgy, is an oft-ignored document in the Catholic music culture wars, usually due to the fact that most of the battles take place on the aesthetic level. My heart will always prefer chant, and in its absence, well-crafted sacred music. However, having made my intellectual peace with musical taste, I want once again to highlight the fact that the music reforms of the twentieth century were moving not only towards authentic sacred music, but also towards an expanded role for the psalms. De Musica Sacra 27a-c gives the explicit...