| recordings |
|---|
| 1933-04-25 – 1936-06-06 | The Well-Tempered Clavier, Book I: Prelude and Fugue No. 21 in B-flat major, BWV 866 | | Edwin Fischer | 2:31 |
| 1950-03 | Book I: Prelude & Fugue XXI in B-flat, BWV 866 | | Walter Gieseking | 2:41 |
| 1950 | The Well‐Tempered Clavier, Book I: Prelude and Fugue no. 21 in B‐flat major, BWV 866 | live | Maria Yudina | 3:10 |
| 1951-01-15 | Prelude & Fugue no. 21 in B-flat, BWV 866 | | Maria Yudina | 3:07 |
| 1959 – 1961 | The Well-Tempered Clavier, Book I: Prelude & Fugue No. 21 in B-flat major, BWV 866 | | Samuil Feinberg | 2:28 |
| 1962-06 – 1965-08 | Prelude and Fugue No. 21 in B-flat major, BWV 866 | | Glenn Gould | 2:37 |
| 1968 | Fugue n°21 du prélude et fugue en si bémol majeur BWV 866 (Clavecin bien tempéré vol.1) | cover | The Swingle Singers | 1:25 |
| 1969-04-20 | The Well-Tempered Clavier, Book 1, BWV 846-869 (excerpts): Prelude and Fugue no. 21 in B-flat major, BWV 866 | live | Sviatoslav Richter | 2:35 |
| 1969-04-20 – 1969-04-21 | Prelude and Fugue no. 21 in B-flat major | live | Sviatoslav Richter | 2:26 |
| 1969-04-20 – 1969-04-21 | Prelude and Fugue no. 21 in B-flat major | live | Sviatoslav Richter | 2:35 |
| 1969-04-21 | The Well-Tempered Clavier, Book 1, BWV 846-869 (excerpts): Prelude and Fugue no. 21 in B-flat major, BWV 866 | live | Sviatoslav Richter | 2:25 |
| 1970-07-21 – 1970-07-31 | The Well-Tempered Clavier, Book I: Prelude & Fugue XXI in B-flat, BWV 866 | | Sviatoslav Richter | 2:38 |
| 1972 | Prelude and Fugue No. 21 in B flat major, BWV 866 | | Tatyana Nikolaieva | 3:15 |
| 1972 | The Well-Tempered Clavier, Book I: Prelude & Fugue No. 21 in B-flat major, BWV 866 | | Louis Thiry | 3:03 |
| 1972 – 1973 | Prelude and Fugue No. 21 in B-flat major, BWV 866 | | Gustav Leonhardt | 3:14 |
| 1973-08-10 | The Well-Tempered Clavier, Book I: No. 21 in B-flat major, BWV 866 | live | Sviatoslav Richter | 2:24 |
| 1983-01 | Praeludium & Fuga (a 3 voci) in B-Dur, BWV 866 | | Kenneth Gilbert | 3:07 |
| 1984-09 | The Well-Tempered Clavier, Book I: XXI. Prelude and Fugue in B-flat major, BWV 866 | | András Schiff | 2:58 |
| 1988-06 | Das wohltemperierte Klavier, I. Teil: Praeludium und Fuge Nr. 21 B-dur, BWV 866 | | Davitt Moroney | 3:20 |
| 1989-01 | BWV 866 - Prelude and Fugue B-dur No. 21 | | Glen Wilson | 2:54 |
| 1989 | Prelude and Fugue No. 21 in B-flat major, BWV 866 | | Christiane Jaccottet | 3:01 |
| 1995-12-02 – 1995-12-10 | The Well-Tempered Clavier, Book I: No. 21 in B-flat major, BWV 866 | | Jenő Jandó | 3:13 |
| 2000-06 | Praeludium & Fuga (a 3 voci), BWV 866: B Flat major | | Ottavio Dantone | 3:25 |
| 2017-03-22 | The Well-Tempered Clavier I, no. 21 in B-flat major, BWV 866 | | Bart Naessens | 3:53 |
| 2019-07-03 – 2019-07-06 | Praeludium et Fuga XXI in B-dur, BWV 866 | | 大塚直哉 | 3:44 |
| 2021-06-08 – 2021-06-11 | Præludium & Fuga XXI in B-flat major, BWV 866 | | Benjamin Alard | 3:14 |
| 2023-01 – 2023-03 | Praeludium & Fuga B-Dur, BWV 866: Praeludium XXI | | Alexandra Sostmann | 1:18 |
| Das wohltemperirte Clavier - Book 1: Prelude and Fugue no. 21 in B flat | | Angela Hewitt | 3:12 |
| Prelude and Fugue no. 21 in B-flat major, BWV 866 | | Rosalyn Tureck | 2:48 |
| Prélude et fugue en si bémol majeur BWV 866 | | Zuzana Růžičková | 3:14 |
| The Well-Tempered Clavier, Book I: Prelude & Fugue in B-flat major, BWV 866 | | Francesco Cera | 3:30 |
