MUS 311 Counterpoint
P. Fugue (continued), Chapter 16
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Generalizations:
-
Only the exposition of a fugue proceeds according to
a set formal plan; beyond that, musical material is dictated by the
nature of the piece and by the composer.
-
General fugal procedure: to bring the subject back
in various keys and voices with episodes between.
- The subject in its complete form is seldom announced twice in
succession in the same voice.
- Contrapuntal devices and interchange of voices are often used to
create interest and variety.
- Near the end of the fugue, there is usually at least one
announcement of the subject in the tonic key.
- The structure of the whole is generally sectional, with cadences
marking the ends of sections--however, no pronounced halt in
rhythmic motion.
- Sometimes a passing tone, or suspension, in one voice carries on
the rhythmic flow, softening the dividing action of the cadence.
Episodes:
- Episodes function in fugues as they do in inventions: to effect a
smooth transition from one key to the next, and to provide variety.
- Episodes are almost always sequential, and interchange of material
among voices is frequent.
- Material from the subject, countersubject, or even new material
may serve as the basis for episodes.
- Texture of the episode tends to be thinner--some voices
temporarily drop out.
Middle Entry:
- Middle Entry--announcement(s) of the subject that occurs
after the exposition, but before the final return to the tonic key.
Special Devices re Middle Entries:
- Stretto, augmentation, diminution, contrary motion and pedal point
appear frequently in fugal writing, especially stretto.
Retrograde motion is seldom encountered.
- Pedal points are usually based on the tonic or dominant.
Final Portion:
- There is invariably a return to the tonic key somewhere
before the end.
- Some fugues have only a short recapitulation; in rare
cases, only a portion of the subject is brought back.
- Strettos often appear in the closing portions of fugues.
- Pedal points often appear in the latter portions of fugues.
- If they occur before the coda, they are almost always on the
dominant.
- Added thirds are sometimes incorporated.
- If a coda is included, it may be a few beats to several measures
long--seldom longer.
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