source file: mills2.txt Date: Wed, 24 Jan 1996 13:05:08 -0800 Subject: Reply to Adam/ Erv Wilson paper From: "John H. Chalmers" Adam: The most complete exposition of Erv Wilson's work in Just Intonation, particularly the Combination Product Sets, is his article "D'Allesandro, Like a Hurricane" in Xenharmonikon XII: 1-39 (1989). [ All issues of XH, including the latest one, XH16, are available from Frog Peak Music, P.O. Box 1052, Lebanon, NH 03766. (603) 448-8837.] I must warn that the article is concisely and pithily written and presupposes familiarity with the basic concepts of extended JI such as Partch tonality Diamonds, generalized keyboards, ratios, prime factors, etc. It consists of a few pages of mostly historical explanatory text and many diagrams of keyboards, tuned percussion instruments, tone lattices, interval charts, notations, etc. However difficult it may appear, it will reward careful study; the most difficult conceptual hurdle is the lack of a global tonal center, or rather the presence of multiple equivalent centers, in the primary CPS, though the Mandala or Stellated Hexany has an 1/1 as do the tonality diamonds. As Brian mentioned, a number of composers have composed Wilson's with concepts. These composers include Paul Rapoport, Warren Burt, Glen Prior, Kraig Grady and Stephen James Taylor, whose soundtrack to the film, "The Giving," employs the Hebdomekontany, a 70-tone set. Erv's article, however, is limited to structures built from 6 or fewer factors (The 70-any consists of the tones defined by the products of 8 factors taken 4 at a time and is homologous to the smaller 6-any and 20-any.) --John Received: from eartha.mills.edu [144.91.3.20] by vbv40.ezh.nl with SMTP-OpenVMS via TCP/IP; Thu, 25 Jan 1996 02:43 +0100 Received: from by eartha.mills.edu via SMTP (940816.SGI.8.6.9/930416.SGI) for id RAA27857; Wed, 24 Jan 1996 17:43:14 -0800 Date: Wed, 24 Jan 1996 17:43:14 -0800 Message-Id: <9601240915247327@csst.com> Errors-To: madole@ella.mills.edu Reply-To: tuning@eartha.mills.edu Originator: tuning@eartha.mills.edu Sender: tuning@eartha.mills.edu