Although the “fantasia” was already considered as old-fashioned around 1700, this genre exerted a particular fascination on the very young Bach – he had since relocated to Köthen – and the experienced composer as well. Volume 3 of the Complete Organ Works, gathers together all transmitted organ fantasias by Bach, the fragments of the fugues belonging to them and all individual fugues as well. It is included, for instance, the Fantasia in C BWV 570, probably the master’s oldest free organ work. Undoubtedly, the most notable works in this edition are the celebrated Fantasia in g BWV 542/1 and the Fuga in g BWV 542/2. Did Bach actually intend a combination of the two pieces as a joint composition? This and other intriguing questions concerning versions, sources and genre history are examined by editor Pieter Dirksen in the introduction and comments. An elaborate synopsis, versions and dubious works complement the edition online. CONTENT: 1. Fantasia in C Major BWV 570 2. Fantasia in C Minor BWV 1121 3. Fantasia in C Minor BWV 562/1 4. Fantasia in C Minor BWV 562/1 (early version) 5. Fantasia et Fuga in C Minor BWV 537 6. Fantasia in G Major BWV 571 7. Fantasia in G Minor BWV 542/1 8. Fuga in G Minor BWV 542/2 9. Fantasia in B Minor BWV 563 10. Fuga in C Major (after Albinoni) BWV 946 11. Fuga in C Minor (after Bononcini) BWV 574 12. Fuga in C Minor BWV 574b (early version) 13. Fuga in C Minor BWV 575 14. Fuga in D Minor BWV 539/2 15. Fuga in G major BWV 577 16. Fuga in G Minor BWV 578 17. Fuga in A Major BWV 949 18. Fuga in A Major (after Albinoni) BWV 950 19. Fuga in B-flat Major („Erselius“) BWV 955 20. Fuga in B-flat Major BWV 955a (early version) 21. Fuga in B Minor (after Corelli) BWV 579 22. Fantasia in C Major (fragment) BWV 573 (in the appendix) 23. Fuga in C Minor (fragment) BWV 562/2 (in the appendix) 24. Praeludium in D Minor BWV 539/1 (in the appendix) 25. Fuga in G Minor BWV 131a (in the appendix) 26. Fuga in G Minor BWV 542/2 - early version and variants (online) 27. Fuga in G Minor BWV 542/2 - F Minor version (online) 28. Fuga in B-flat Major BWV 955 - ornamented version (online) 29. Fantasia in A Minor BWV 561 (online) 30. Fuga in C Major BWV Anh. 90 (online) 31. Fuga in D Major BWV 580 (online) 32. Fuga in G Major BWV 576 (online)