Prelude and Fugue in C major BWV 547 (1. Prelude)

Although late, remember the anniversary of March 21 ...

The great Prelude and Fugue in C major BWV 547 is a work for organ composed by JS Bach in Leipzig, presumably in the years 1738-1742. It is, therefore, one of the organ pieces of great relevance compounds
from German musician; composition is coeval with important collections such as the second volume of the Well-Tempered Clavier, the Choir of Leipzig and the third part of Clavierübung.

Prelude
As a whole, the work seems to be structured, like the Prelude and Fugue in E flat major BWV 552, what great exaltation of the Holy Trinity; are different aspects to substantiate this hypothesis.

The thematic material from which the prelude, in the time of 9/8, takes the form, for example, is formed by three groups of three notes (notes 9, therefore), arranged by grade and by ascending motion; in the complex of the stop times stronger fall on the I, III and V on the degree of hue explored at that time.

Moreover, in the pedal, almost like ostinato bass, appears a fanfare composed of descending notes, as if to symbolize the descent of Christ on Earth.

Apart from the symbolic point of view, the piece is also interesting from the point of view of harmonious: Bach ranges, starting from the pure key of C major, in a vast harmonic path, also contemplating shades "distant", often achieved by sudden and surprising turns harmonics.

Sonus Paradisi Great Modern composit organ.*

Specification (52 stops/3 manuals +P)
I used the following demo sample sets: Rotterdam-Laurenskerk Main Organ, Velesovo, Menesterol.

*from the Augustine's Virtual Organs
Original & Composit sample sets.

Free sheet music from IMSLP:
http://conquest.imslp.info/files/imglnks/usimg/e/eb/IMSLP01332-BWV0547.pdf