pure fifth tuning.

>>Does anyone know about P.F.E.T.(Cordier's system)at all in North
America? If anyone has experienced this tuning, I would like to hear
from them.I only red the book(in french),and it
sounded(!!!)interesting.<<

Greetings,
I don't know about the Cordier system, but there is a traditional style
of tuning that has been in favor with the Steinway factory tuners in New York
that results in pure fifths.
Assume an honest to goodness 12ET on a piano that begins getting its
octaves stretched upward beginning in the region of middle C (C4). This
stretching allows the fifths to lose most of their tempering within an octave
and a certain sound appears, a combination of pure fifths, somewhat busy
single and double octaves and a real churn to the thirds.
It is the thirds that make the sound so energetic, but the hot octaves
give a lot of drive to the melodic line,( though single octaves exhibit an
increasingly "choral" nature as one progresses up the board). It is an edgy
sound, very "in your face" and has been preferred by several nightclub piano
people here that wanted something that could "cut through" a rhythm section.

Most piano techs should be able to provide a pure fifths tuning upon
request, it is rather easy to do, just stretch till the fifths sound pure,
and get used to busy thirds.
Regards,
Ed Foote
Nashville, Tn.

Ed Foote wrote,

>Assume an honest to goodness 12ET on a piano that begins getting its
>octaves stretched upward beginning in the region of middle C (C4).

You mean don't stretch the lowest octaves at all? Wouldn't that sound
horrible, especially given the inharmonicity of the piano?

This tuning (7th root of 3/2) is in the scale archive.
It has been invented by at least three people:
Augusto Novaro, Mieczyslaw Kolinsky and Serge Cordier.
The files are cordier.scl and kolinsky.scl.
A similar tuning is the Stopper-Stimmung (19th root of 3).

Manuel