A
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The sources do not include naturals to b2 in bar 231 and to b3 in bar 232, which is due to the fact that the rules of validity of accidentals when using an octave sign are different in the sources than in our edition. See also bar 235.
Compare the passage in the sources »
category imprint: Interpretations within context
issues: Accidentals in different octaves
notation: Pitch