Canonic Variations on "Vom Himmel hoch da komm' ich her"
Again there is a canon between the hands and the chorale tune in the pedals.  It is strict three-part writing (each hand only plays one note at a time, as if for a melodic instrument). This time it is a “canon at the fifth” (the right hand begins on C, the left hand imitates half a bar later starting on the F below).  The canon is based on the first and second lines of the chorale.  When the start of the canon comes back near the end, it is syncopated.  At the very end the hands play a scale going up.  Bach may have meant this to sound like angels going up to heaven, or the soul going up.