Collections of short keyboard preludes by Johann Sebastian Bach had been around since the 18th century. For instance the
Six Little Preludes, BWV 933–938 are found as a group of six in manuscripts before they were published as a set in the 19th century. The
Twelve Little Preludes are however a 19th-century compilation extracted from two manuscripts, the
Klavierbüchlein für Wilhelm Friedemann Bach, and the composite manuscript
P 804 (known as the
Kellner Collection) of the
Berlin State Library, both with dozens of works by various composers and written down by multiple known and unknown scribes. The date of origin of the pieces in the
Twelve Little Preludes collection is presumed to be around the first half of the 1720s, that is the period of Bach's later years in
Köthen and his first years in
Leipzig, where he had become
Thomaskantor in 1723. In January 1720 he had started the Klavierbüchlein (keyboard-booklet) for his eldest son
Wilhelm Friedemann, who was nine years old at that time. ) • BWV 924 (No. 2 in the Klavierbüchlein) →
Twelve Little Preludes No. 1 • BWV 925 (No. 27 in the Klavierbüchlein) →
Twelve Little Preludes No. 4 • BWV 926 (No. 4 in the Klavierbüchlein) →
Twelve Little Preludes No. 5 • BWV 927 (No. 8 in the Klavierbüchlein) →
Twelve Little Preludes No. 8 • BWV 928 (No. 10 in the Klavierbüchlein) →
Twelve Little Preludes No. 9 • BWV 929 (No. 48e in the Klavierbüchlein) →
Twelve Little Preludes No. 10 • BWV 930 (No. 9 in the Klavierbüchlein) →
Twelve Little Preludes No. 11 BWV 925 may have been composed by Wilhelm Friedemann (it has the number
BR A 45 in the catalogue of the compositions of that composer). BWV 929 is not actually a
Prelude: it is a
Trio composed for a
Minuet by
Gottfried Heinrich Stölzel. All other pieces extracted from W. F. Bach's Klavierbüchlein are titled "Praeambulum" or "Praeludium" (both Latin expressions translated as "Prelude") in the manuscript. Together with BWV 931 and 932 (Nos. 29 and 28 in the Klavierbüchlein) this set is also known as (nine little preludes from the keyboard-booklet for Wilhelm Friedemann Bach). Other preludes contained in the Klavierbüchlein: • BWV 939 (
Five Little Preludes No. 1) This prelude was added as No. 3 to the
Twelve Little Preludes. Its composition date is estimated as 1717–23. Its 18th-century manuscript, Fascicle 19 of
P 804, is a copy by
Johann Peter Kellner, produced around the middle of the 1720s or later. ==Publication==