| recordings |
|---|
| 1952-08-31 | Lyric Pieces, Book 6, op. 57: IV. Geheimnis (Secret) | | Strings of the Hallé Orchestra, Sir John Barbirolli | 4:02 |
| 1990-02-13 – 1990-02-19 | Hemmelighet (Secret), op. 57 no. 4 | | Balázs Szokolay | 4:10 |
| 1993-04-10 – 1993-04-12 | Mystère op. 57 n°4 | | Edda Erlendsdóttir | 4:30 |
| 1993-07-07 | Lyrische Stücke, op. 57: Nr. 39. Geheimnis | live | Sviatoslav Richter | 5:33 |
| 1993-11-09 | Lyric pieces: Hemmelighed (Secret), op. 57/4 | live | Sviatoslav Richter | 5:30 |
| 1993-12-21 – 1993-12-23 | Lyriske Stykker Hefte 6, Op. 57: IV. Hemmelighed (Secret) | | Einar Steen-Nøkleberg | 5:37 |
| 2001-06-27 – 2001-07-11 | Lyrische Stücke, Book VI, op. 57 no. 4: Geheimnis | | Håkon Austbø | 4:11 |
| 2007-01 | Lyric Pieces VI, op. 57: IV. Secret | | Mie Miki | 5:04 |
| 2021-10-05 – 2021-10-07 | Hemmelighet, op. 57 no. 4 | | Peter Donohoe | 4:52 |
| 1-15 Hemmelighed Op. 57 N. 4 | | Sviatoslav Richter | 5:28 |
| Lyric Pieces for piano, Book 6, Op. 57: No. 4, The Secret | | Isabel Mourao | 5:09 |
| Lyric Pieces VI, op. 57 no. 4: Secret | | Daniel Adni | 4:56 |
| Lyric Pieces, Op. 57 (Volume VI): 4. Secret | | Gerhard Oppitz | 6:10 |
| Lyriske stykker VI, op. 57: No. 4. Secret (Hemmelighet) | | Eva Knardahl | 5:26 |
| Lyriske stykker, Op. 57 No. 4: Hemmelighet | | Geir Henning Braaten | 4:37 |
| Pièces Lyriques VI, Op. 57 No. 4: Secret | | Aldo Ciccolini | 5:12 |
| Secrecy Op. 57 No. 4 | | Михаил Васильевич Плетнёв | 6:44 |
