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6 I.
Pandiatonicism
Pandiatonic (freely diatonic) music uses traditional scalar materials, but in somewhat nontraditional ways. In
this technique any note of the prevailing scale—most often simply a major scale or diatonic mode—may be combined with any other notes of that scale if the result is pleasing to the composer. Any kind of chord construction may be used, although tertian sonorities are most typical. Tritone relationships are usually avoided, and chromaticism is minimal. The key is firmly established. The most common types of pandiatonic use follow. follow. A.
The composer may use nontraditional arrangements of scalar notes; chords can be understood as tall chords, added note chords, or suspensive chords.
B.
The composer may use tall or additive tertian sonorities, often associated with pedal effects and typically dominant.
C.
The composer may use chordal ostinato effects, usually involving alternation of two or three chords.
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D.
II.
The composer may use two contrapuntal “streams” of chords, often resulting in a polychordal sound (see Part IV, Unit 9).
Suggestions for class discussion. A.
Analyze the examples as discussed in paragraph I.
B.
Analyze the examples in Unit 32 of Music for Analysis . Students may bring additional examples from the literature into class.
C.
Suggested reading (see the Bibliography): Dallin, Persichetti, Reti, Ulehla.
Exercises
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1.
Study the Ravel Mother Goose Suite: The Magic Garden (#402 in Music for Analysis ). Then, write six to eight measures in the style of Example I–A.
2.
Write two phrases for piano employing pedal effects as in Example I–B.
3.
Continue and complete Example I–D for brass choir.
4.
Write a brief choral “Amen,” starting as follows:
5.
Complete the following fanfare for brass choir:
TWENTIETH-CENTURY MATERIALS
6. Harmonize the following using a pandiatonic idiom. Strive for an effective accompanimental pattern, possibly an ostinato. Experiment with a variety of devices such as added notes, interior pedal points, and so forth. This may be written for piano or instruments available in class.