The cantatas composed by Johann Sebastian Bach, known as Bach cantatas (German: ), are a body of work consisting of over 200 surviving independent works, and at least several dozen that are considered lost. As far as known, Bach's earliest cantatas date from 1707, the year he moved to Mühlhausen, although he may have begun composing them at his previous post in Arnstadt. Most of Bach's church cantatas date from his first years as and director of church music in Leipzig, a position which he took up in 1723.
Working for Leipzig's and , it was part of Bach's job to perform a church cantata every Sunday and holiday, conducting soloists, the Thomanerchor and orchestra as part of the church service. In his first years in Leipzig, starting after Trinity of 1723, Bach regularly composed a new cantata every week, although some of these cantatas were adapted (at least in part) from work he had composed before his Leipzig era. Works from three annual cycles of cantatas for the liturgical calendar have survived. These relate to the readings prescribed by the Lutheran liturgy for the specific occasion. The last known cantata was composed in 1745.
In addition to the church cantatas composed for occasions of the liturgical year, Bach wrote sacred cantatas for functions like weddings or (the inauguration of a new town council). His secular cantatas, around 50 known works, less than half of which surviving with both text and music, were written for academic functions of the University of Leipzig, or anniversaries and entertainment among the nobility and in society, some of them (congratulatory cantatas) and (homage cantatas).
Bach's cantatas usually require four soloists and a four-part choir, but he also wrote solo cantatas (i.e. for one soloist singer) and dialogue cantatas for two singers. The words of Bach's cantatas, almost always entirely in German, consist mostly of 18th-century poetry, Lutheran hymns and dicta. Hymns were mostly set to their Lutheran chorale tune. His chorale cantata cycle contains at least 40 chorale cantatas, each of these entirely based on text and tune of such hymn.
Titles of the cantatas
Although the German term Bachkantate (Bach cantata) became very familiar, Bach himself rarely used the title Cantata in his manuscripts. In , he wrote Cantata à Voce Sola e Stromenti (Cantata for solo voice and instruments). Another cantata in which Bach used that term is . Typically, he began a heading with the abbreviation J.J. (, "Jesus, help"), followed by the name of the celebration, the beginning of the words and the instrumentation, for example in . Bach often signed his cantatas with SDG, short for ("glory to the only God" / "glory to God alone").
Bach often wrote a title page for the autograph score and copies of the original parts. For example, he titled the parts of Aus tiefer Not schrei ich zu dir, BWV 38, using a mix of languages to describe the occasion, the incipit, the precise scoring and his name: "Dominica 21. post Trinit / Aus tieffer Noth schrey ich zu dir. / â / 4. Voc. / 2. Hautbois. / 2. Violini. / Viola. / 4. Tromboni / e / Continuo. / di / Signore / J.S.Bach". The occasion for which the piece was performed is given first, in Latin: "" (21st Sunday after Trinity Sunday, with Trinit short for Trinitatem). The title follows, given in German in the orthography of Bach's time. The scoring and finally his name appear in a mix of French and Italian, the common languages among musicians at the time, partly abbreviated.
BWV number
Bach wrote more than 200 cantatas, of which many have survived. In the Bach-Werke-Verzeichnis (BWV), Wolfgang Schmieder assigned them each a number within groups: 1–200 (sacred cantatas), 201–216 (secular cantatas), and 217–224 (cantatas of doubtful authorship). Since Schmieder's designation, several of the cantatas he thought authentic have been redesignated as "spurious." However, the spurious cantatas retain their BWV numbers. The List of Bach cantatas is organized by BWV number but sortable by other criteria.
Structure of a Bach cantata
A typical Bach cantata of his first year in Leipzig follows the scheme: Opening chorus Recitative Aria Recitative (or Arioso) Aria Chorale
The opening chorus () is usually a polyphonic setting, with the orchestra presenting the themes or contrasting material first. Most arias follow the form of a da capo aria, repeating the first part after a middle section. The final chorale is typically a homophonic setting of a traditional melody.