The Prelude and Fugue in B-flat major, BWV 866, is a keyboard composition by Johann Sebastian Bach. It is the 21st prelude and fugue in the first book of The Well-Tempered Clavier, a series of 48 preludes and fugues by the composer. It was composed no later than 1722.[1]
The prelude is in common time (4/4 time) and is composed of 20 bars, which are split into 2 periods of 10 bars each. The first period has a toccata-style melody which uses demisemiquaver (32nd note) broken chords and scale passages. In the first two bars, it uses a four-note sequence which drops by a third every half-bar. This period ends with a perfect cadence in dominant key of F major.
The second period uses a fantasia style and alternates between chords and scale progressions. The coda in bar 20 uses an extended arpeggio in the tonic that confirms the key of B-flat major. One copy of the prelude by a Bach pupil has the word adagio to the big chords in bar 11, which suggests that the second period should have a more improvisatory rhythm.[2][3] Below are the opening bars of the prelude:
Fugueedit
The structure of the fugue is similar to that of sonata form: it has an exposition (bars 1–13), a development (bars 13–41) and a recapitulation (bars 41–48). In the exposition, the subject is stated in the tonic, B-flat major. The second voice enters in the dominant, F major, in bar 5, then the third voice enters in the tonic once again in bar 9.
In the development, the subject is restated, then the first episode (bars 19–22) modulates the fugue to G minor, then the subject is restated twice in G minor, then C minor. The second episode (bars 30–35) then modulates the fugue to G minor, then C minor. The subject is then restated in E-flat major.
In the recapitulation, the subject is restated once again, still in E-flat major, then a coda (bars 45–48) leads to a perfect authentic cadence in the tonic.[3][4][5] Below are the first two statements of the fugue:
Referencesedit
^"The Well-Tempered Clavier I No. 21 in B-flat major – Bach". www.bachvereniging.nl. Retrieved 2023-06-24.
prelude, fugue, flat, major, this, article, multiple, issues, please, help, improve, discuss, these, issues, talk, page, learn, when, remove, these, template, messages, this, article, contain, excessive, inappropriate, references, self, published, sources, ple. This article has multiple issues Please help improve it or discuss these issues on the talk page Learn how and when to remove these template messages This article may contain excessive or inappropriate references to self published sources Please help improve it by removing references to unreliable sources where they are used inappropriately August 2023 Learn how and when to remove this message This article may require cleanup to meet Wikipedia s quality standards The specific problem is Pictures sandwiching text Please help improve this article if you can August 2023 Learn how and when to remove this message Learn how and when to remove this message The Prelude and Fugue in B flat major BWV 866 is a keyboard composition by Johann Sebastian Bach It is the 21st prelude and fugue in the first book of The Well Tempered Clavier a series of 48 preludes and fugues by the composer It was composed no later than 1722 1 Prelude source source Fugue source source Performed by Kimiko Ishizaka Problems playing these files See media help Prelude editThe prelude is in common time 4 4 time and is composed of 20 bars which are split into 2 periods of 10 bars each The first period has a toccata style melody which uses demisemiquaver 32nd note broken chords and scale passages In the first two bars it uses a four note sequence which drops by a third every half bar This period ends with a perfect cadence in dominant key of F major The second period uses a fantasia style and alternates between chords and scale progressions The coda in bar 20 uses an extended arpeggio in the tonic that confirms the key of B flat major One copy of the prelude by a Bach pupil has the word adagio to the big chords in bar 11 which suggests that the second period should have a more improvisatory rhythm 2 3 Below are the opening bars of the prelude nbsp Fugue editThe structure of the fugue is similar to that of sonata form it has an exposition bars 1 13 a development bars 13 41 and a recapitulation bars 41 48 In the exposition the subject is stated in the tonic B flat major The second voice enters in the dominant F major in bar 5 then the third voice enters in the tonic once again in bar 9 In the development the subject is restated then the first episode bars 19 22 modulates the fugue to G minor then the subject is restated twice in G minor then C minor The second episode bars 30 35 then modulates the fugue to G minor then C minor The subject is then restated in E flat major In the recapitulation the subject is restated once again still in E flat major then a coda bars 45 48 leads to a perfect authentic cadence in the tonic 3 4 5 Below are the first two statements of the fugue nbsp References edit The Well Tempered Clavier I No 21 in B flat major Bach www bachvereniging nl Retrieved 2023 06 24 Ledbetter David 2008 Bach s Well tempered Clavier The 48 Preludes and Fugues Yale University Press p 221 ISBN 9780300128987 a b Schulenberg David 1992 The Keyboard Music of J S Bach Macmillan Publishing Company p 192 ISBN 9780028732756 LCCN 91039348 Tonic Chord 2018 05 05 Bach Prelude and Fugue No 21 in Bb Major BWV 866 Analysis Tonic Chord Retrieved 2023 06 24 Ledbetter David 2008 Bach s Well tempered Clavier The 48 Preludes and Fugues Yale University Press pp 221 222 ISBN 9780300128987 Portal nbsp Classical music Retrieved from https en wikipedia org w index php title Prelude and Fugue in B flat major BWV 866 amp oldid 1177092131, wikipedia, wiki, book, books, library,
