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Bach, Johann Sebastian : Prelude, Fugue and Allegro Prelude

Work Overview

Music ID : 53811
Instrumentation:Piano Solo 
Genre:fuga
Total Playing Time:2 min 30 sec
Copyright:Public Domain

Commentary (1)

Author : Ooi, Kazurou

Last Updated: October 30, 2023
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Note: This article is automatically translated from the original Japanese text. The author of the original work did not supervise this translation.

A common pitfall in this prelude is that the dynamics can become flat. What follows is a guideline for controlling dynamics.

In measure 1, the hands are relatively far apart, so start with a certain degree of forte or mezzo-forte. Another reason to begin forte is that the notes descend from measures 1 to 3, necessitating a diminuendo in each measure.

Entering measure 4, the number of bass notes doubles, increasing the tension; the dynamics in measures 4-5 can be a diminuendo, a crescendo, or a subtle combination thereof, but it also depends on how the performer perceives the B-flat major in measure 6 compared to the opening E-flat major.

It is acceptable to enter B-flat major smoothly with a diminuendo. Now, upon entering B-flat major, the notes descend again from measures 6 to 8, so apply a diminuendo.

Again, the number of bass notes doubles in measures 8-9. Up to this point, it's the same as before.

What changes is that from measures 11-13, the number of bass notes doubles even further. Although the melodic contour is descending, the C minor in measure 14 can have high tension, making it possible to apply a crescendo despite the descending sequence.

These are just a few examples, but since the piece modulates through E-flat major, B-flat major, and C minor, the performer should determine the dynamics they feel for each key, and apply changes in volume accordingly, or leading towards them.

Writer: Ooi, Kazurou
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