Invention No. 7 BWV 778 in E Minor

The structure of the Invention no. 7 BWV 778 is similar to a fugue with presentations of the subject in different keys connected by episodes.

Subject presentation	Measures 1 to 3	E minor
Episode	Measures 3 to 7	Modulates to G major
Subject followed by episode	Measures 7 to 9	Subject in G major. The episode leads to D major.
Subject followed by episode	Measures 9 to 12	Subject in D major. The episode leads to B minor.
Episode	Measures 13 to 15	B minor.
Episode	Measures 15 to 19	E minor. Dominant pedal.
Coda	Measures 20 a 23	E minor.
Complete Invention

Invention No. 7 BWV 778 in E Minor by Bach