Op 20 no 1

There are no fingerings in the 1921 and 1923 editions.

• Bar 1 (upbeat)
  1923: plena voce (not pleno; similarly bar 38); lacks con Pedale
• Bar 8
  1959: error in RH, 3rd beat, top of 2nd chord should be C not Db
• Bars 9, 43
  1921 & 1923: upper stems in the LH absent
• Bars 12-13
  1921: Pedal mark on each of the four beats of bar 12, and the first beat of bar 13
• Bar 13
  All editions are consistent in starting the RH legato slur on the final two chords, however in both his 1930 and 1936 recordings Medtner plays these two chords mezzo staccato, as marked in the LH.
• Bar 16
  1923: diminduendo hairpin missing
• Bar 18
  1923: hairpins absent; f on last chord of 3rd beat
• Bar 19
  1921: first chord missing A from RH and bottom C from LH; hairpin peaking on C over first two beats of LH
  1923: first chord missing upper C from LH octave
  1921 & 1923: half-note C in RH tied to preceding C in LH. The absence of this tie in the 1959 edition may be an error. Medtner's 1930 and 1936 recordings are unclear as the RH is barely audible.
• Bars 20-22
  1921: Pedal marks on the 2nd, 3rd and 4th beats of bar 20, all four beats of bar 21, and the first beat of bar 22
• Bar 28
  1921 & 1923: LH hairpins absent
• Bar 30
  1921 & 1923: comma at bar end absent
• Bar 31
  1921: (p) and comma absent
  1923: hairpins, (p) and comma absent
• Bar 32
  1921 & 1923: pedal mark and (p) absent
• Bar 33
  1921 & 1923: Gb tied between the 2nd and 3rd notes of the triplet in RH 3rd beat. Medtner usually tied notes shared by a slurred pair of chords and does so in his 1936 recording, so this is probably an error in the 1959 edition.
• Bar 36
  1921 & 1923: comma absent
• Bar 37
  1921: senza ritardare absent
  1923: senza ritardare, sfrenatamente absent
• Bars 38, 41
  1921 & 1923: f absent at start of bar
• Bar 39
  1921 & 1923: accent on whole note, start of bar. The accent is noticeable in both Medtner's recordings.
• Bar 43
  1921 & 1923: LH last two notes are F₂ and F₃; no upper stems in LH
• Bar 46
  1921: LH last two chords lack A natural
• Bar 47
  1921 & 1923: sempre marcato il basso absent
• Bar 48
  1923: error, b missing from E in 4th beat of RH
• Bar 49
  1921 & 1923: sempre calmando (ma a tempo) absent
• Bar 50
  1921 & 1923: RH 3rd beat ties Bb between 2nd and 3rd chords, paralleling the previous bar. The omission of this tie in the 1959 is doubtless an error; see also bar 33. Medtner ties the Bb in his 1936 recording.
• Bar 51
  1923: calando absent
• Bar 52
  1921 & 1923: pause under LH chord absent

Op 20 no 2

The title "Campanella" and the subtitle are absent from the 1923 edition. It also lacks the indications tenebroso and sempre al rigore di tempo e sostenuto, reiterated in the footnote of the 1959 edition. These are all handwritten additions to Medtner's own copy of the original edition (reproduced in Natascha Konsistorum's biography) except that Medtner's footnote reads "Whoever finds it boring to play this al rigore di tempo had better leave this piece alone". As Barrie Martyn points out in his biography, Medtner was so insistent on this point that he wrote out the marking separately on each of the nine pages.

Not all recordings observe Medtner's instruction.

The 1923 edition has no pedal marks.

• Bar 1
  1923: tenebroso and sempre con poco Pedale absent
• Bars 29, 33
  1923: hairpin dynamic absent
• Bar 34
  1923: dolce absent
• Bar 50
  1923: accents on first chord in RH and LH absent
• Bar 51
  1923: Eb not E in the LH. This is an obvious error in the 1959 edition. Medtner plays Eb, but some performers play E natural
• Bars 62-64
  1923: tenuto marks absent
• Bar 66
  1923: accent on C in RH absent
• Bar 70
  1923: fp absent
• Bars 73-74
  1923: hairpin crescendo to f absent
• Bars 76-77
  1923: hairpin diminuendo absent
• Bar 78
  1923: meno f cantabile absent
• Bars 82-95
  1923: all dynamics except the ff in bar 90 absent
• Bars 98, 100
  1923: hairpin in LH absent
• Bars 109-113
  1923: RH accents absent; ff and hairpin in bar 113 absent
• Bar 114
  1959: error in RH, 3rd beat, 2nd note should be G not F#. This change appears in the errata to the Collected Edition published with volume 3, but has not been corrected in the Dover edition.
• Bar 117
  1923: RH accents absent
• Bars 121-122
  1923: hairpin crescendo from start of bar 121 to halfway through bar 122
  1959: dimin to mf
• Bar 126
  1923: ff absent
• Bars 131-end
  1923: lacks sempre ff, sempre al rigore di tempo al fine, the long slur in the RH, and the two ff marks at the end. The fingerings of the 1959 edition appear without the misprinted 1 on the E# of bar 134. The low B in the final bar is an eighth-note followed by two eight-note rests; the 1959 edition is clearly in error in giving quarter-notes.