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Despite the fact that the organ is also a keyboard instrument, and that in Bach's time the distinction wasn't always made whether a keyboard composition was for organ or another keyboard instrument, Wolfgang Schmieder ranged organ compositions in a separate section of the Bach-Werke-Verzeichnis (Nos. 525-771).
The Well-Tempered Clavier, BWV 846–893, consists of two sets of preludes and fugues in all 24 major and minor keys for keyboard by Johann Sebastian Bach. In the composer's time clavier referred to a variety of keyboard instruments, namely the harpsichord, the clavichord and the organ (which operates using air instead of strings), but not ...
Johann Sebastian Bach's The Well-Tempered Clavier, two complete sets of 24 Preludes and Fugues written for keyboard in 1722 and 1742, and often known as "the 48", is generally considered the greatest example of music traversing all 24 keys. Many later composers clearly modelled their sets on Bach's, including the order of the keys.
The earliest known source for the tuning is the publication in 1753 of Versuch über die wahre Art das Clavier zu spielen by Carl Philipp Emanuel Bach.This work describes how to tune the fifths slightly different from purity, accompanied by an aural control of major and minor thirds, as well as full chords, so that all twenty-four keys sound clean and crisp, even to the highly trained ear.
The Prelude and Fugue in C major, BWV 846, is a keyboard composition written by Johann Sebastian Bach. It is the first prelude and fugue in the first book of The Well-Tempered Clavier, a series of 48 preludes and fugues by the composer. An early version of the prelude, BWV 846A, is found in the Klavierbüchlein für Wilhelm Friedemann Bach.
Johann Sebastian Bach [n 1] (31 March [O.S. 21 March] 1685 – 28 July 1750) was a German composer and musician of the late Baroque period.He is known for his prolific output across a variety of instruments and forms, including the orchestral Brandenburg Concertos; solo instrumental works such as the cello suites and sonatas and partitas for solo violin; keyboard works such as the Goldberg ...
Alternatively, "Reverse Lehman-Bach 14," a system by Kees Van Den Doel, features only 3 pure perfect fifths in exchange for optimal major thirds, with none wider than a Pythagorean Third. [ 16 ] The contemporary composer Douglas Leedy has written several works for harpsichord or organ in which the use of a well temperament is required.
Although the enharmonic key of A-flat major is preferred because A-flat major has only four flats as opposed to G-sharp major's eight sharps (including the F), G-sharp major appears as a secondary key area in several works in sharp keys, most notably in the Prelude and Fugue in C-sharp major from Johann Sebastian Bach's The Well-Tempered Clavier, Book 1.