Bach

A synthesis of European Baroque traditions

Johann Sebastian Bach was born in Eisenach on 21 March 1685 and died in Leipzig on 28 July 1750. He belonged to an extensive Thuringian family of professional musicians and grew up in an environment where instrumental playing, church music, municipal music and craft knowledge were closely connected.

Bach’s achievement is not adequately described simply as mastery of counterpoint. His music absorbs the North German organ tradition, Central German chorale practice, Italian ritornello and concerto principles, French dance and ornament, the rhetoric of Lutheran sacred music and a sophisticated understanding of instrumental idiom. He repeatedly transformed inherited models through unusually dense motivic integration and long-range harmonic planning.

His reputation during his lifetime rested strongly on his abilities as an organist, keyboard player, improviser, teacher and expert on organs. The nineteenth-century Bach revival greatly expanded public awareness of the vocal and instrumental repertory, while twentieth- and twenty-first-century source scholarship, critical editions and historically informed performance have altered how his works are dated, attributed and performed.

Why Bach remains central

Eisenach, Ohrdruf and Lüneburg: 1685–1702

Bach was born in Eisenach into the household of Johann Ambrosius Bach, a town and court musician. His mother Elisabeth died in 1694 and his father in February 1695. Orphaned before the age of ten, Johann Sebastian moved to Ohrdruf to live with his elder brother Johann Christoph Bach, organist of St Michael’s Church. There he continued his schooling, sang in the choir and received keyboard and organ instruction.

The organ rebuilding at St Michael’s exposed the young musician to the mechanical and tonal construction of the instrument. In 1700 he moved to Lüneburg as a chorister at St Michael’s School. His environment brought him into contact with Georg Böhm and the north German organ tradition; he also travelled to Hamburg, where Johann Adam Reincken represented an older generation of celebrated organists.

Manuscript discoveries have significantly deepened knowledge of these early years. Copies made by the young Bach of demanding organ music demonstrate that his technical and intellectual engagement with the repertory was already advanced while he was still a schoolboy.

Arnstadt and Mühlhausen: 1703–1708

After a brief period in the Weimar court orchestra in 1703, Bach inspected the new organ at the New Church in Arnstadt and was appointed its organist. The post provided a fine instrument and considerable opportunity for keyboard development, but relations with local authorities were sometimes tense.

In 1705 he travelled to Lübeck to hear and study with Dieterich Buxtehude. The journey became famous because Bach remained away substantially longer than the leave granted by his employers. The experience connected him directly with the large-scale North German organ tradition and with Buxtehude’s sacred concert practice.

In 1707 Bach became organist at St Blasius in Mühlhausen. On 17 October he married his second cousin Maria Barbara Bach. The cantata Gott ist mein König, BWV 71, written for the installation of the town council in 1708, was printed—an exceptional distinction in a career during which relatively few works appeared in print.

Weimar: 1708–1717

In June 1708 Bach entered the service of the dukes of Saxe-Weimar as chamber musician and organist. Weimar became crucial for his development as an organ composer and as a writer of cantatas. He studied and transcribed Italian concertos, especially works associated with Vivaldi and other contemporary composers, absorbing principles of ritornello design, tonal direction and large-scale contrast.

In 1714 he was promoted to concertmaster, with responsibility for composing new church music on a regular basis. Works from the Weimar period include major organ repertory, early versions of later compositions and an important sequence of cantatas. The years also strengthened his reputation as an organist and expert evaluator of instruments.

Bach accepted the position of Kapellmeister at Köthen in 1717 without first obtaining his dismissal from Weimar. His employer refused the resignation; Bach was detained for about a month and was eventually released and dismissed in December.

Köthen: 1717–1723

As Kapellmeister to Prince Leopold of Anhalt-Köthen, Bach held one of the highest-ranking positions of his career. Because the Calvinist court had limited use for elaborate Lutheran church cantatas, his compositional centre of gravity shifted strongly toward instrumental music.

The Köthen years are associated with many of Bach’s great instrumental collections, although the exact dating of individual pieces and earlier versions is often complex: the Brandenburg Concertos, works for solo violin and cello, orchestral and chamber music, keyboard suites and the first book of The Well-Tempered Clavier belong to this broader creative world.

In 1720, while Bach was away with the court, Maria Barbara died unexpectedly and had already been buried before his return. On 3 December 1721 he married Anna Magdalena Wilcke, a professional court singer. Their household later became an important centre of music-making, copying and instruction.

Leipzig and the first cantata cycles: 1723–1729

In 1723 Bach became Thomaskantor and Director Musices in Leipzig. His responsibilities included music at the principal churches, instruction at St Thomas’s School and the organization of singers and instrumentalists. He took office in June and immediately entered one of the most productive periods in the history of sacred composition.

For Sundays and feast days he created large cycles of church cantatas. The surviving first Leipzig cycle is extensive; the second cycle is organized around Lutheran chorales. Carl Philipp Emanuel Bach later reported that his father had composed five annual cantata cycles, though substantially fewer survive complete.

The St John Passion, BWV 245, received its first performance in 1724. The St Matthew Passion, BWV 244, followed in an early version in 1727. These works expand the Passion tradition through double-choir writing, chorales, recitative, arias and highly differentiated instrumental colours.

Leipzig, Collegium Musicum and mature collections: 1729–1740s

From 1729 Bach directed the Collegium Musicum associated with Café Zimmermann. This provided a regular secular concert environment and opportunities to perform concertos, orchestral music, chamber works and secular cantatas. It also brought Bach back into highly visible public keyboard performance.

During the Leipzig decades Bach increasingly organized, revised and published collections. The four parts of Clavier-Übung include the six Partitas, the Italian Concerto and French Overture, the great organ collection centred on the E-flat major Prelude and Fugue, and the Goldberg Variations. The second book of The Well-Tempered Clavier belongs to this period of mature keyboard synthesis.

Administrative friction was recurrent. Bach’s 1730 memorandum on a “well-appointed church music” complained about the resources available to him. In 1736 he obtained the title of Royal Polish and Electoral Saxon Court Composer, an honour that strengthened his professional standing.

Final decade: contrapuntal synthesis and court connections

In the 1740s Bach devoted increasing attention to works that demonstrate contrapuntal possibility in concentrated form. In 1747 he visited Frederick II of Prussia at Potsdam and improvised on a royal theme. The encounter led to The Musical Offering, BWV 1079, a collection of ricercars, canons and a trio sonata built around the king’s subject.

The Art of Fugue, BWV 1080, explores a single principal subject through increasingly complex contrapuntal procedures. Its final state and the relationship between surviving sources, publication and Bach’s last revisions have long been central subjects in Bach scholarship.

Bach also assembled the Mass in B minor, BWV 232, drawing on both newly composed and reworked earlier music. The Kyrie and Gloria had been presented to the Dresden court in 1733; the complete Mass took shape in its final form near the end of his life.

Family, teaching, illness and death

Bach was father to a large family. Among his sons, Wilhelm Friedemann, Carl Philipp Emanuel, Johann Christoph Friedrich and Johann Christian Bach became important professional musicians and composers. Teaching was a constant part of Bach’s work, from keyboard technique and figured bass to composition, counterpoint and ensemble practice.

His eyesight deteriorated seriously in 1749–50. In 1750 he underwent operations by the travelling eye surgeon John Taylor; complications followed. Bach suffered a stroke and died in Leipzig on 28 July 1750.

His immediate posthumous reputation was complex: some music continued in pedagogical and connoisseur circles, while changing styles reduced public performance of much of the vocal repertory. The preservation efforts of family members, pupils and collectors proved decisive for the later revival.

Contrapuntal thinking

Bach’s counterpoint is rarely merely demonstrative. Subjects, countersubjects and canons interact with harmonic rhythm, rhetoric, dance character and instrumental gesture. Even in highly learned pieces, musical argument is usually shaped by direction, climax and contrast.

Fugal procedure appears throughout his output—in organ music, keyboard works, choral movements, chamber music and late collections. He was particularly interested in inversion, augmentation, diminution, stretto and the reuse of a theme in multiple contrapuntal configurations.

Harmony, rhetoric and form

Bach’s harmony combines a strong sense of tonal destination with intense local chromaticism. Sequences, pedal points, circle-of-fifths progressions and carefully prepared dissonance give long movements coherence even when their surface is densely contrapuntal.

Vocal music is closely responsive to text. Recitative, aria, chorale and chorus can carry different theological and dramatic functions, while instrumental obbligato parts often intensify or comment on the words.

Instrumental knowledge

Bach was an expert organist and frequently consulted on instruments. His writing reflects practical knowledge of organs, harpsichords, clavichords, strings, winds and continuo. Questions of original instrumentation remain important in some works because surviving sources can preserve arrangements, revisions or alternative versions.

He was also an accomplished violinist and violist. The solo string repertory demonstrates detailed understanding of resonance, chordal implication and the possibility of suggesting polyphony on a single melodic instrument.

Revision, parody and reuse

Bach often revised his own music. Movements might be transposed, reorchestrated, given new texts or incorporated into larger compositions. Modern use of the term parody in Bach scholarship refers to this compositional reworking, not to comic imitation.

Because many pieces survive in more than one version, a single BWV entry may represent a complex history. Critical editions therefore distinguish source layers and performing versions rather than assuming one timeless “final text.”

Bach Digital and source research

Bach Digital is a central research portal for works and surviving sources of the Bach family. It provides detailed work and source records and digitized manuscripts, allowing researchers and performers to compare autographs, copyists, provenance and versions.

The Leipzig Bach Archive is internationally recognized as a principal centre of Bach research, with a specialist library, research institute, museum and digital resources. Its work underpins modern chronology, source description, catalogue revision and attribution research.

Important documentary categories

Major modern studies

Works, catalogues and specialist references

Institutional reference links

Bach-Archiv Leipzig: https://www.bach-leipzig.de/

Bach Digital: https://www.bach-digital.de/

Bach Bibliography: https://www.bach-bibliographie.de/

BWV³ information: Bach-Archiv Leipzig and Breitkopf & Härtel.

Documentary considerations

Biographical narrative should distinguish what is documented from what is inferred. Dates and attributions should follow current source research where possible, especially because the chronology and authorship of some works have changed substantially through manuscript study. For disputed works, the archive should record the level of certainty rather than silently choosing one attribution.