Sechs Chorale von verschiedener Art: auf einer Orgel mit 2 Clavieren und Pedal vorzuspielen (lit. 'six chorales of diverse kinds, to be played on an organ with two manuals and pedal'), commonly known as the Schübler Chorales (German: Schübler-Choräle), BWV 645–650, is a set of chorale preludes composed by Johann Sebastian Bach. Johann Georg Schübler, after whom the collection came to be named, published it in 1747 or before August 1748, in Zella St. Blasii. At least five preludes of the compilation are transcribed from movements in Bach's church cantatas, mostly chorale cantatas he had composed around two decades earlier.
The fact that Bach had gone to the trouble and expense of securing the services of a master engraver to produce a collection of note-for-note transcriptions of this kind indicates that he did not regard the Schübler Chorales as a minor piece of hack-work, but as a significant public statement. These six chorales provide an approachable version of the music of the cantatas through the more marketable medium of keyboard transcriptions. Virtually all Bach's cantatas were unpublished in his lifetime.
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Context and content
The hymn tunes of the Lutheran hymns on which the chorale settings included in the Schübler Chorales are based can be identified by their Zahn number. The fourth chorale of the set is however based on a German variant of the Ninth psalm tone.
Five of the Schübler Chorales are transcriptions of movements of extant church cantatas by Bach. These cantatas belong to the chorale cantata or second year cycle. Bach began to present the cantatas of this cycle from the first Sunday after Trinity 11 June 1724, which was the start of his second year in Leipzig. He continued to present 40 new chorale cantatas until Easter of the next year, 1 April 1725, from which day the chorale cantata cycle and the second year cycle no longer coincide: for the remainder of his second year in Leipzig his newly composed church cantatas were no longer in the chorale cantata format, while on the other hand he added chorale cantatas to the cycle which were composed outside the period of his second year in Leipzig. Listed according to the sequence of the liturgical year:
BWV 6 is a cantata for Easter Monday: it was first presented in Bach's second year in Leipzig, on 2 April 1725, shortly after Bach had discontinued chorale cantatas in that year. Its third movement is the model for BWV 649.
BWV 10 is a cantata for Visitation: this chorale cantata was presented during Bach's second year in Leipzig, on the Feast of the Visitation, 2 July 1724. Its fifth movement is the model for BWV 648.
BWV 93 is a cantata for the fifth Sunday after Trinity: first presented one week after BWV 10, on 9 July 1724, it also belongs to both the chorale cantata cycle and the second year cycle. Its fourth movement is the model for BWV 647.
BWV 137 is a cantata for the twelfth Sunday after Trinity: first performed on 19 August 1725 it is a later addition to the chorale cantata cycle. Its second movement is the model for BWV 650.
BWV 140 is a cantata for the 27th Sunday after Trinity (or: the last Sunday before Advent): first performed on 25 November 1731 it is a later addition to the chorale cantata cycle. Its fourth movement is the model for BWV 645.
Wachet auf, ruft uns die Stimme, BWV 645
Wachet auf, ruft uns die Stimme, BWV 645.
The hymn tune of this chorale prelude is "Wachet auf, ruft uns die Stimme" ("Wake, Awake for Night is Passing"), Zahn No. 8405.
The chorale prelude is a transcription of "Zion hört die Wächter singen" ("Zion hears the watchmen sing"), the 4th movement of the cantata Wachet auf, ruft uns die Stimme, BWV 140, which is a chorale for tenor voice accompanied by unison strings and continuo.
Wo soll ich fliehen hin (or) Auf meinen lieben Gott, BWV 646
Wo soll ich fliehen hin (or) Auf meinen lieben Gott, BWV 646.
Hymn tune: "Wo soll ich fliehen hin" ("Whither shall I flee?"), or, "Auf meinen lieben Gott", Zahn No. 2164.
Since no model has been found for BWV 646, most scholars assume that the source cantata is one of the 100 or so believed to have been lost. The trio scoring of the movement suggests the original may have been for violin, or possibly violins and violas in unison (right hand), and continuo (left hand), with the chorale (pedal) sung by soprano or alto.
Wer nur den lieben Gott lässt walten, BWV 647
Wer nur den lieben Gott lässt walten, BWV 647.
Hymn tune: "Wer nur den lieben Gott läßt walten" ("Who allows God alone to rule him"), Zahn No. 2778.
Arranged from Wer nur den lieben Gott läßt walten, BWV 93, movement 4 (duet for soprano and alto).
Meine Seele erhebt den Herren, BWV 648
Meine Seele erhebt den Herren, BWV 648.
Tune: "Meine Seele erhebt den Herren" ("My soul doth magnify the Lord"), a German variant of the tonus peregrinus or ninth psalm tone.
Arranged from Meine Seel erhebt den Herren, BWV 10, movement 5 (duet for alto and tenor, chorale instrumental).
Ach bleib bei uns, Herr Jesu Christ, BWV 649
Ach bleib bei uns, Herr Jesu Christ, BWV 649.
Hymn tune: "Ach bleib bei uns, Herr Jesu Christ" ("Lord Jesus Christ, with us abide"), Zahn No. 493 (a.k.a. "Danket dem Herrn heut und allzeit").
Arranged from Bleib bei uns, denn es will Abend werden, BWV 6, movement 3 (soprano chorale).
Kommst du nun, Jesu, vom Himmel herunter, BWV 650
Kommst du nun, Jesu, vom Himmel herunter, BWV 650.
Hymn tune: "Kommst du nun, Jesu, vom Himmel herunter auf Erden" ("Come thou, Jesu, from heaven to earth"), Zahn No. 1912a (a.k.a. "Hast du denn, Jesus, dein Angesicht gänzlich verborgen").
Lobe den Herren, den mächtigen König der Ehren, BWV 137, movement 2 (alto solo).
Reception
In Bach's Nekrolog the Schübler Chorales were listed as the fifth item, after the four Clavier-Übung volumes, among the composer's printed works: "Sechs dreystimmige Vorspiele, vor eben so viel Gesänge, für die Orgel" (lit. 'six three-part preludes, to as many hymns, for the organ'). In 1776 Johann Friedrich Köhler wrote admiringly about the chorales. Early Bach-biographies by Hiller (1784), Gerber (1790) and Forkel (1802) listed the six chorale preludes among Bach's printed works. Forkel added that they were "full of dignity and religious feeling", and mentioned that the registration was sometimes indicated by Bach in greater detail than usual, for example in the second chorale (BWV 646). At least seven manuscript copies of the preludes, based on the uncorrected or corrected original print, were realised before Breitkopf & Härtel republished them in the early 19th century.
In 1847 C. F. Peters published the six Schübler Chorales, edited by Griepenkerl and Roitzsch, as part of larger sets of chorale preludes. Biographers Schauer (1850), Hilgenfeldt (1850) and Bitter (1865) included the chorales in their overviews of Bach's compositions.