29: "Praeludium"; possibly by W. F. Bach, ) BWV 932 – Prelude in E minor (incomplete; Klavierbüchlein No. 28: "Praeludium ex e♭"; possibly by W. F. Bach, ) Six Little Preludes (933–938) An 18th-century set of short preludes by Johann Sebastian Bach: BWV 933 – Little Prelude in C major BWV 934 – Little Prelude in C minor BWV 935 – Little Prelude in D minor BWV 936 – Little Prelude in D major BWV 937 – Little Prelude in E major BWV 938 – Little Prelude in E minor Five Little Preludes (939–943) Five short preludes found in the manuscript P 804 (collection of Johann Peter Kellner): BWV 939 – Prelude in C major BWV 940 – Prelude in D minor BWV 941 – Prelude in E minor BWV 942 – Prelude in A minor BWV 943 – Prelude in C major Fugues and fughettas (944–962) BWV 944 – Fantasia and Fugue in A minor BWV 945 – Fugue in E minor (doubtful, possibly by Christoph Graupner) BWV 946 – Fugue in C major BWV 947 – Fugue in A minor BWV 948 – Fugue in D minor BWV 949 – Fugue in A major BWV 950 – Fugue in A major on a theme by Tomaso Albinoni BWV 951 – Fugue in B minor on a theme by Tomaso Albinoni BWV 951a – Fugue in B minor (alternative version of BWV 951) BWV 952 – Fugue in C major BWV 953 – Fugue in C major BWV 954 – Fugue in B-flat major on a theme by Johann Adam Reincken BWV 955 – Fugue in B-flat major BWV 956 – Fugue in E minor (doubtful) BWV 957 – Machs mit mir, Gott, nach deiner Güt (chorale prelude for organ in the Neumeister Collection, previously listed as Fugue in G major) BWV 958 – Fugue in A minor (doubtful) BWV 959 – Fugue in A minor BWV 960 – Fugue in E minor (incomplete and doubtful) BWV 961 – Fughetta in C minor BWV 962 – Fughetta in E minor (spurious, composed by Johann Georg Albrechtsberger) Sonatas and sonata movements (963–970) BWV 963 – Sonata in D major BWV 964 – Sonata in D minor (arrangement of Sonata No. 2 for solo violin, BWV 1003 – doubtful) BWV 965 – Sonata in A minor (after Johann Adam Reincken's Hortus Musicus, Nos. 1–5) BWV 966 – Sonata in C major