Fughetta in E minor BWV 901 – Prelude and Fughetta in F major BWV 902 – Prelude and Fughetta in G major BWV 902a – Prelude in G major (alternative version of BWV 902) BWV 903 – Chromatic Fantasia and Fugue in D minor BWV 903a – Chromatic Fantasia in D minor (alternative version of BWV 903) BWV 904 – Fantasia and Fugue in A minor BWV 905 – Fantasia and Fugue in D minor (doubtful) BWV 906 – Fantasia and Fugue in C minor (fugue unfinished) BWV 907 – Fantasia and Fughetta in B-flat major (doubtful) BWV 908 – Fantasia and Fughetta in D major (doubtful) BWV 909 – Concerto and Fugue in C minor (doubtful) BWV 910 – Toccata in F-sharp minor BWV 911 – Toccata in C minor BWV 912 – Toccata in D major BWV 913 – Toccata in D minor BWV 914 – Toccata in E minor BWV 915 – Toccata in G minor BWV 916 – Toccata in G major BWV 917 – Fantasia in G minor BWV 918 – Fantasia in C minor BWV 919 – Fantasia in C minor (doubtful, possibly by Johann Bernhard Bach) BWV 920 – Fantasia in G minor (doubtful) BWV 921 – Prelude in C minor BWV 922 – Prelude (Fantasia) in A minor BWV 923 – Prelude in B minor (possibly by Wilhelm Hieronymus Pachelbel) BWV 923a – Prelude (Toccatina No. 3; variant of BWV 923; doubtful) Nine Little Preludes from Wilhelm Friedemann Bach's Klavierbüchlein (924–932) Indicated as "Neun kleine Präludien aus dem Klavierbüchlein für Wilhelm Friedemann Bach" (nine little preludes from the keyboard-booklet for Wilhelm Friedemann Bach) in the Bach-Werke Verzeichnis: BWV 924 – Prelude in C major (Klavierbüchlein No. 2: "Praeambulum") BWV 924a – Prelude in C major (Klavierbüchlein No. 26: "Preludium ex c♮"; variant version of BWV 924 probably by W. F. Bach, ) BWV 925 – Prelude in D major (Klavierbüchlein No. 27: "Praeludium ex d♮"; possibly by W. F. Bach, ) BWV 926 – Prelude in D minor (Klavierbüchlein No. 4: "Praeludium") BWV 927 – Prelude in F major (Klavierbüchlein No. 8: "Praeambulum") BWV 928 – Prelude in F major (Klavierbüchlein No. 10: "Praeludium") BWV 929 – Prelude in G minor (Klavierbüchlein No. 48e: Trio for a Minuet by Gottfried Heinrich Stölzel) BWV 930 – Prelude in G minor (Klavierbüchlein No. 9: "Praeambulum") BWV 931 – Prelude in A minor (Klavierbüchlein No.