Schübler Chorales

Set of chorale preludes by Johann Sebastian Bach
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Title page of the 1740s first edition of the Schübler Chorales

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of the cantatas through the more marketable medium of keyboard transcriptions.[1] Virtually all Bach's cantatas were unpublished in his lifetime.

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.[2] 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:

For BWV 646 there is no extant model from which the chorale prelude may have transcribed.[13] Apart from some original manuscripts of the preceding cantata models there are no extant manuscripts of the Schübler Chorales older than their 1747–1748 printed version: Bach's only extant autograph regarding the organ versions consists of the corrections and improvements he wrote, before August 1748, in his copy of the first edition.[14]

All six Schübler Chorales are in the chorale fantasia format: this means that one of the melody lines in the setting is the relatively unadorned chorale tune, which is called cantus firmus. The two central preludes of the set (BWV 647 and 648) are four-part settings, while the others are three-part settings (trios).[14]

External audio
audio icon You may hear the Chorale Prelude For Organ, BWV 645: "Wachet auf, ruft uns die Stimme" as performed by E. Power Biggs in 1968
Here on archive.org
BWV # Title Model Date Tune
645 1 Wachet auf, ruft uns die Stimme BWV 140/4 25 November 1731 Zahn No. 8405
646 2 Wo soll ich fliehen hin (unknown) Zahn No. 2164
Auf meinen lieben Gott
647 3 Wer nur den lieben Gott lässt walten BWV 93/4 9 July 1724 Zahn No. 2778
648 4 Meine Seele erhebt den Herren BWV 10/5 2 July 1724 9th psalm tone
649 5 Ach bleib bei uns, Herr Jesu Christ BWV 6/3 2 April 1725 Zahn No. 493
650 6 Kommst du nun, Jesu, vom Himmel herunter BWV 137/2 19 August 1725 Zahn No. 1912a

Wachet auf, ruft uns die Stimme, BWV 645

BWV 645 (excerpt)

Wachet auf, ruft uns die Stimme, BWV 645.

Chorale melody

Hymn tune of 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.

Model

From Wachet auf, ruft uns die Stimme, BWV 140
4. "Zion hört die Wächter singen"
performed by MIT Concert Choir (Cutter)

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