FE1 (→FE2→FE3) features an A1 as the bottom note on the 2nd crotchet in the bar. This patent inaccuracy was corrected only in FE4. The remaining sources include the correct F1.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: EE revisions, Errors in FE, Terzverschreibung error, Authentic corrections of FE
notation: Pitch