Issues : 4/4 or 2/2

b. 1

composition: Op. 10 No 4, Etude in C♯ minor

in AI

in FE (→GE,EE)

..

We give the time signature marking after AI, although theoretically, Chopin could have introduced  in the lost [A]. According to us, it is, however, much more likely that it was an arbitrary change of the engraver of FE (→GE,EE), who did not use the  marking in the Etudes​ – contrary to the manuscripts – even once, cf. the Etudes in C major, No. 1, F major, No. 8 and C minor, No. 12. The phenomenon is also present in other pieces, even in the most obvious cases, e.g., in the Etudes in F minor, Op. 25 No. 2, D major, Op. 25 No. 8 or F minor, Dbop. 36 No. 1. 

category imprint: Interpretations within context; Differences between sources

issues: Errors in FE , 4/4 or 2/2