This E minor prelude and fugue from The Well-Tempered Clavier Book II demonstrates Bach's mastery of counterpoint and his advocacy for equal temperament tuning. The prelude unfolds as a swift corrente dance with intricate two-voice imitation, while the fugue employs a gigue-like subject that builds dramatic tension through rhythmic interplay before resolving in a majestic conclusion.
The Well-Tempered Clavier Book II (1742) is a seminal collection of preludes and fugues in all 24 keys, showcasing equal temperament tuning. BWV 879 in E minor features a contemplative prelude and a complex four-voice fugue, demonstrating Bach's mastery of counterpoint and structural innovation that influenced generations of composers.