THE FUGUE Based on Hugo Norden's Foundation Studies in Fugue The Subject -A fugue consists of the statement and development of a single subject (the main idea). It usually is
-The subject usually has following three characteristics:
-The opening of a subject ('head' of the subject or 'La tÍte du sujet') should be strong and easy to
The Answer -In the simplest case, the answer is the subject (dux) transposed to the dominant key (5th higher or
-If a subject in the major key contains a leading tone, the answer (comes) requires an accidental for
-If a subject is in the minor key, the answer requires accidentals for both the II and VII notes of the
-If the subject contains additional accidentals, these too must be reflected in the answer. -An answer that is a literal transposition (every note is transposed exactly a perfect 5th up or a
-When notes in the subject are in the dominant key andare answered in the tonic key in contrast to
Subjects That Require a Real Answer -Those subjects will begin and end on the I or III notes, and -They will not contain a leap from the I or III notes to the V or VII notes at or near the beginning. Subjects That Require a Tonal Answer -Group I
-Group II
-Group III
-Group IV
Modulating Effects to the Dominant Key -In order for a subject to end on V or VII, a modulation from the tonic key (either the opening or
The Countersubject -Countersubject means countermelody, counterpoint (punctus contra punctum). In a fugue it is the
-The countersubject must be so constructed that it will function equally well both above and below
Process for Composing a Countersubject 1.) All of the subject is in the tonic key: -Those subjects require a real answer (literal transposition). But, these in turn subdivide into two
-Subjects without tied notes:
-Subjects with tied notes:
2.) Most of the subject is in the tonic key: -Set up a three-stave Double Counterpoint format with the subject on the top line, and on the
-Fill in the countersubject on the middle line so that it will produce correct counterpoint against both subject and answer. -Copy out the countersubject in Double Counterpoint against both subject and answer (transposed
-Although the countersubject is the same melodically for both subject and answer, its contrapuntual
-If the subject begins on a dominant note, the countersubject should begin before the subject
3.) Most of the subject is in the dominant key: -Set up a three-stave Double Counterpoint format with the subject on the bottom line, and the
-Fill in the countersubject on the middle line so that it will provide suitable counterpoint against both
-Copy out the countersubject in Double Counterpoint against both subject and answer (both
The Stretto -Stretto is the contrapuntual device wherein the subject or answer is played against itself
-It is most necessary in a stretto formation that all entries of the subject or answer be stated with all
1.) Literal Stretto: -The subject is treated canonically, the answer does not appear. -It can be structured as a canon at the 8ve, in Double Counterpoint at the 15th. This process will
2.) Stretto by contrary motion: -This kind of a stretto can be constructed by exact intervallic imitation in contrary motion (an
3.) Retrograde Stretto: - The subject or answer is played backwards against itself (Crab Canon or Cancrizans Motion). -Three reasons why this kind of stretto is impractical:
4.) Stretto by Augmentation: -The subject is played against the subject in augmentation (the note values are doubled, tripled,
5.) Stretto by Diminution: -The subject is played against the subject in diminution (smaller note values). 6.) Stretto in Contrary Motion and Retrograde: -This kind of stretto entails a crab canon in contrary motion. 7.) Stretto in Contrary Motion and Augmentation: -This kind of stretto entails an augmentation in contrary motion. 8.) Stretto in Contrary Motion and Diminution: 9.) Stretto in Retrograde and Augmentation: 10.) Stretto in Retrograde and Diminution: 11.) Stretto in Contrary Motion, Retrograde, and Augmentation. 12.) Stretto in Contrary Motion, Retrograde, and Diminution. Solving the Stretto Problem -Constructing Strettos to a given subject, as in a fugue examination, and -Constructing an original subject to yield pre-planned stretto combinations. 1.) Constructing strettos to a given subject: -Fit the beginning of the subject against the end of the subject in as many ways as possible. 2.) Composing a subject with pre-established stretto requirements: -Formulate the problem (for example compose a subject of type real in the key of D-major, 2/4
-Set up the canon problem so that the first and last notes will conform to the terminal specifications
-Complete the canon. The Codetta and Episode -The terms codetta and episode both refer to connecting passages that are generally composed of
Codetta -The first codetta appears at the end of the initial statement of the subject when there is a time lag
-The codetta between the second and third entries is usually longer and more substantive than the
-In a four-voice fugue there can also be a codetta between the third and fourth entries. Episode -The episode differs from the codetta chiefly in its location in the fugue, which is after the exposition
Process for the Writing of an Episode -The harmonies at the two ends of the episode must be clearly defined (those two ends are the
-Decide on a contrapuntual or harmonic device to direct the contrapuntual texture from the
-Connect the episode artistically at both ends so that there are no 'seams' or 'rough edges'. The Pedal-Point and Cadenza -Pedal-Point:
-Cadenza:
The Exposition -The opening section of the fugue wherein each voice is brought in singly, alternating between
-Following is one example of a possible exposition in a four-part fugue: S subject countersubject A answer countersubject free part T subject countersubject free part free part B answer The Process of Writing an Exposition -Write the correct answer to a subject and compose a suitable countersubject. -Decide on an entrance arrangement, and write in the subject, answer, and countersubject where
-Complete the exposition by supplying the necessary codetta and free parts. Harmony -The fugal harmony must be considered on three levels:
-In order to see the underlying chordal structure, it is necessary to remove all embellishing
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