We’ll look at a sampling of the two-part inventions—Invention No. 1 in C major, No. 2 in C Minor, No 4 in D minor, No, 6 in E major, and No. 8 in F major. We’ll also look at two of the three-part inventions (or Sinfonia)—No. 3 in D major, and No. 9 in F minor.