Inventions and Sinfonias (Bach)
COLLECTION OF THIRTY KEYBOARD COMPOSITIONS BY J. S. BACH
Two-part inventions; Bach inventions; Inventions and sinfonias; Invention No. 1 (Bach); Bwv 772; Bwv772; Two part inventions; BWV 772; Inventions and Sinfonias (J. S. Bach); Two- and Three-Part Inventions; Three Part Inventions; Two Part Inventions; Two-Part Inventions; BWV 794; Inventions (Bach); Inventions and Sinfonias (Bach)
The Inventions and Sinfonias, BWV 772–801, also known as the Two- and Three-Part Inventions, are a collection of thirty short keyboard compositions by Johann Sebastian Bach (1685–1750): 15 inventions, which are two-part contrapuntal pieces, and 15 sinfonias, which are three-part contrapuntal pieces. They were originally written as "Praeambula" and "Fantasiae" in the Klavierbüchlein für Wilhelm Friedemann Bach, a Clavier-booklet for his eldest son, and later rewritten as musical exercises for his students.