Rapid keyboard composition for organ dating from baroque period
The third movement assumes a ternary form, with a distinct chordal section surrounding a solo melody with accompaniment.
The melody keeps the same dotted-rhythm throughout, but it goes through some interesting harmonies and has a nice effect.
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The Organ Concerto No 5, in D minor, was written between 17, while Bach served as court organist in Weimar (1708--1717).
During this time, Bach made about twenty keyboard transcriptions of concertos by other composers; five were written expressly for the organ.
Because their function is to complement the experience of the first movement through a new but related range of contrasts, the scope and manner of the later movements depend on the nature and the degree of prior development of the thematic material. In rondo form a recurring theme is contrasted with a number of intervening themes, as A B A C A.Most frequently it refers to such a piece for one or two instruments, such as Beethoven’s that from the mid-18th century were used in sonatas for small instrumental groups.The term has been more loosely applied to 20th-century works, whether or not they rely on 18th-century principles.After a short pedal solo, the falling figure returns in the pedal and the tenor to recall the beginning, and a wonderful diminished-seventh chord sounds over a tonic pedal right before the end of this section.The alla breve Fugue has a very stately sound to it, employing a slow, rising tetrachord for the subject.