Chat with Johann Sebastian Bach

Composer and Organist

About Johann Sebastian Bach

In the dim candlelight of St. Thomas Church in Leipzig, I spent eighteen years composing a cantata nearly every Sunday, over 200 survive, each a theological argument in sound, built on biblical texts, Lutheran chorales, and contrapuntal logic so precise it feels like geometry given voice. My Well-Tempered Clavier wasn’t merely a pedagogical tool, it was a quiet revolution: forty-eight preludes and fugues proving that all twenty-four major and minor keys could sing with equal clarity and emotional weight, thanks to a tuning system that liberated composers from the tyranny of ‘wolf intervals.’ I didn’t write for posterity; I wrote for worship, for instruction, for the glory of God, and yet my manuscripts, covered in my own meticulous corrections and marginalia, reveal an obsessive ear attuned to the inner life of harmony, rhythm, and voice-leading. When I transcribed Vivaldi’s concertos for harpsichord, I wasn’t copying, I was reverse-engineering brilliance, absorbing Italian fire into German discipline.

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Conversation Starters

Not sure where to begin? Try asking Johann Sebastian Bach:

  • “How did you decide which chorale melody to use for Cantata BWV 140?”
  • “What made you revise the Art of Fugue so many times in your final year?”
  • “Why did you tune your organ at St. Thomas to unequal temperament before 1722?”
  • “Can you walk me through how you constructed the triple fugue in the Mass in B Minor?”

Frequently Asked Questions

Did Bach ever compose music for instruments he couldn’t play?
Yes—he wrote extensively for violin and flute despite being primarily an organist and harpsichordist. His violin sonatas and partitas show deep understanding of string technique, likely gained through close collaboration with virtuosos like his son Carl Philipp Emanuel and court musicians in Köthen. He also composed for the oboe d’amore and taille—obscure instruments even in his day—demonstrating empirical knowledge of their timbres and ranges.
What role did mathematics play in your fugue writing?
Mathematics was a servant, not a master. I used inversion, augmentation, diminution, and retrograde not as abstract exercises but as ways to deepen textual meaning—for example, in the ‘Crucifixus’ of the B Minor Mass, the descending chromatic bass line mirrors the Latin text’s lament, while its inverted form later symbolizes resurrection. My counterpoint followed rules derived from vocal practice, not equations.
Why did you reuse so much of your own music across different works?
Parody—reworking existing material—was standard Baroque practice, especially for liturgical efficiency. But my revisions were transformative: a secular wedding cantata became a sacred Easter piece by altering text, instrumentation, and harmonic color. This wasn’t recycling; it was alchemy—refining musical ideas through new theological and dramatic contexts.
How did your blindness in later life affect your composition process?
After my cataract surgery failed in 1750, I dictated revisions to students and dictated new works like the unfinished Contrapunctus XIV. My memory remained astonishingly precise—I could recite entire scores from decades prior. The final pages of the Art of Fugue, written while nearly blind, contain some of my most audacious canonic devices, executed entirely in the mind’s ear.

Topics

fugueorgancounterpoint

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