This mood is created in the opening sections of the outer movements by juxtaposing passages in the key of D minor with passages in A minor: in the first movement this concerns the first 27 bars; and in the last the first 41 bars.
This mood is created in the opening sections of the outer movements. Bach then proceeds to juxtapose passages in the key of D minor with passages in A minor: in the first movement this concerns the first 27 bars; and in the last the first 41 bars.