Fugue in C BWV 846   Sample  Lesson Sample by J. S. Bach. (Download) BWV 846 from the book The Well Tempered Clavier. This is the original version and not an arrangement. In this lesson you will learn this 4 voice fugue by Bach completely "by ear!" The song is fully demonstrated and then taught "by ear" using no print, music or video. Each measure is broken down note-by-note with fingering and tips on technique.