Invention No. 15 BWV 786 in B Minor

The structure of the Invention no. 15 is similar to a fugue with presentations of the subject connected by episodes.

Subject presentation or exposition	Measures 1 to 7	B minor and F# minor
Episode	Measures 7 to 12	F# minor, B minor and D major
Subject presentation	Measures 12 to 16	D major and A major
Episode	Measures 15 to 18	A major, E major, B minor, F# minor, E minor and D major
Subject presentation	Measures 18 to 22	B minor
Complete Invention

Invention No. 15 BWV 786 in B Minor by Bach