Prelude in 9ET

New piece written over the past few days, uploaded here:

http://www.h-pi.com/downloads.html

Prelude in 9ET is my first effort in this tuning, a slow dance piece
in 6/8, about 6 minutes long. Versions are uploaded for classical
guitar and piano as MIDI files and an mp3 using Logic's Classical
Guitar sample.

I've become very fond of 9ET while working on this. I first saw
9ET in its relation to 12ET as three augmented triads, where the
scale steps between them could only be used as m2 / M7s but
not as M2 / m7. I found this works pretty well, and the rules can also
be bent a little. Major and minor thirds both work well, and the minor has
a nice septimal resonance. The fifths have to be used with caution
harmonically, but melodically and in arpeggios I find the sound of the
4ths and 5ths exciting, and I used lots of circle of fifths progressions.
Feedback welcome as always, and of course I'm interested to hear
other things in 9ET, so please alert me. Enjoy!

Yours,
Aaron Hunt
H-Pi Instruments

--- In tuning@yahoogroups.com, Aaron Andrew Hunt <aahunt@...> wrote:

> Feedback welcome as always, and of course I'm interested to hear
> other things in 9ET, so please alert me. Enjoy!

One of the most striking things about 9-et is that two steps of it give
an almost exact 7/6: 2^(2/9) is 266.667 cents, and 7/6 is 266.871
cents. By stacking 9-ets a quarter-tone (or more precisely, 49 cents)
apart you get sensibly just 7-limit intervals (ennealimmal temperament
MOS.)