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b. 54

composition: Op. 28 No. 21, Prelude in B♭ major

2 bars in A (→FEEE)

1 bar in FC (→GE)

..

The absence of this bar in FC (→GE) must be Fontana's mistake, a so-called haplography, i.e. omitting one out of two identical elements of writing, e.g. letter, syllable, word, etc. while copying. See also the Prelude No. 12 in G Minor, b. 78-79.

category imprint: Differences between sources

issues: Errors of FC