On Bach’s Mass in B Minor:
Its most mystical portion is the ‘Incarnatus’ in the ‘Credo’, and there the effect is due to the faint whispering, lingering sequence in the fugue structure, dying away pianissimo. The held breath and hushed sounds of the passage, its wierd cadences, sinking away in lessened thirds, its pauses and syncopations, and its rise and fall in astonishing semitones, which renders so well the sense of awe-struck wonder–all this serves to express the mysterium by way of intimation, rather than in forthright utterance. And by this means Bach attains his aim here far better than in the ‘Sanctus’.
–Rudolf Otto, John W. Harvey, trans., The Idea of the Holy (New York: Oxford University Press, 1958), 70.
Where or where can we find theologians that have a grasp of what music is doing after the manner of Otto?