Johann Sebastian Bach (1685-1750) stands as one of music's most systematic thinkers, bringing mathematical rigor and spiritual depth to every genre he touched. His output across cantatas, passions, fugues, and chorale settings established the harmonic language that shaped all Western music that followed, making him indispensable to any serious study of composition and voice leading.
For choir directors, Bach's work offers unmatched pedagogical value. His chorales teach voice independence, harmonic function, and text expression simultaneously. Students who engage with Bach develop an ear for counterpoint and a respect for structural clarity that transfers to every other style they encounter.