Issues : Inaccuracies in A

b. 24

composition: Op. 63 No. 1, Mazurka in B major

..

AI has neither  lowering b1 to b1 nor  lowering g1 to g1. The latter is also absent from EEC.

category imprint: Interpretations within context; Differences between sources

issues: Errors in EE , Omission of current key accidentals , Inaccuracies in A