A Feat of Appleticism

Java Applet: PfpFinderApplet.class by Robert T. Kelley

Java 1.3 plugin required

Use: Type in chords to see the pervasively fluent passages that obtain between pairs of chords within the entire progression.

This applet provides a means of exploring harmonic prolongations in any piece of tonal music.
If you need to know more than what is given here about pervasive fluency, see:
- Jones, Evan. 2002. "Pervasive Fluency: A Contrapuntal Definition of Stability and Transience in Tonal Music." Ph.D. diss., University of Rochester.
For more information on prolongational analysis, see Introduction to Schenkerian Analysis.
Before using the applet, the music intended for prolongational analysis must be organized into a diatonic lattice, as shown below. For information on how to construct a diatonic lattice, see Prolongation and the Diatonic Lattice.
To find PFPs, enter all chords, separated by commas (,) or semicolons (;). For each, type in the constituent pitch classes as they appear on the lattice, with spaces or hyphens marking empty lattice loci. Type A, a, T, or t for 10; type B, b, E, e, L, or l (lowercase L) for 11. Do not type double-digit values. Sample entry (CM: I IV ii7 V7 I): 0-4-7,0--5-9,02-5-9,-2-57-L,0-4-7
Alternatively, you can enter the lattice itself as text. End the lines of text representing each diatonic step with a carriage return (newline). Precede each pitch class number with two hyphens (--). Use the 'pipe' character ( | ) for empty lattice loci preceded by two spaces ( ). Use A, a, T, or t for 10, and B, b, E, e, L, or l (lowercase L) for 11. Sample entry (CM: I IV ii7 V7 I):
```
  |  |  |--L  |
  |--9--9  |  |
--7  |  |--7--7
  |--5--5--5  |
--4  |  |  |--4
  |  |--2--2  |
--0--0--0  |--0
```
Below the chord input text box, the PFPs will appear for all chords, if available.
If you have trouble cutting and pasting text into the top applet, try the bottom applet.
MODVLO7 is a more powerful tool for performing diatonic analysis..
If you have any comments, suggestions, pointers, or bug reports, please feel free to .

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Š2001 Robert Kelley