20t-ET pentads

Dan Sterns wrote, TD 693:

> Try the two harmonic and subharmonic pentads I gave and let me know if
> the both the major and minor chords now don't perhaps seem to serve
> equally as grounding points (with the stronger or smother of the two
> being the harmonic "minor" chord).
>

Well, I tried these out being, of course, on my "regular" keyboard
system, scale degrees:

"major" pentad: 0,4,8,11,15
"minor" pentad: 0,4,7,11,15

You know, these DO sound mighty similar in terms of "grounding"
force...They even have a kind of "major-minor" sounding corollary...

However, unlike the previous tetrad example, I don't seem to hear the
"minor" pentad is being that much "stronger or smoother" than the
"major." They now seem pretty "equal" to me... as "stable" as the
12t-ET system majors and minors...

These seem to be the "real" major-minor tonic paradigm chords for this
scale...(??)

[off line for a couple of days... traveling, no laptop!]

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Joseph Pehrson