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Variation 15 (Canon at the Fifth)
We have reached the half-way point in the cycle – a darkly hypnotic variation, and the first in a minor key. This is the most arcane of the canons; set at the fifth and by inversion, each phrase achieves a kind of desolate balance, with each contrapuntal imitation seeming to cancel out its partner. The still point of the turning world.
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