Eagle 53 (Paperback)
My Ultimate Musical Tuning: Second Edition, the Mathematics of Music, Microtonal Theory and Alternative Tunings
Pan Music Publishing, 9780956649263, 86pp.
Publication Date: June 16, 2017
This book is about a new 12 notes per octave tuning called Eagle 53. This tuning was designed to improve on, and replace, the standard Western tuning: 12 Tone Equal Temperament. It took the author 21 years of hard research to work it out. Some notes are higher than usual and some lower in varying degrees. Major or minor chords are not available on three of the twelve notes but where they *do* occur they are much more, almost perfectly, in tune. There are good chords available on every note. Also some new and exotic chords and scales occur that you won't get in regular tuning. Eagle 53 tuning is suitable for pianos and MIDI keyboards that can be retuned with the right software and for guitars and other stringed and fretted instruments (which need refretting to accommodate the new tuning). This book describes how the author worked it out, the rationale behind Eagle 53. Just Intonation is also covered in the book. Eagle 53 is a slightly tempered version of a just tuning, Eagle J.I. which looks like this:
1/1, 16/15, 9/8, 6/5, 5/4, 4/3, 7/5, 3/2, 8/5, 5/3, 9/5, 15/8, 2/1
The '53' refers to 53EDO (53 Equal Divisions of the Octave). Eagle 53 is a 12 note subset of 53EDO.
There is more information, some music, videos and photos on the author's web site...
www dot johnsmusic7 dot com
There is a condensed and cheaper ebook version of this paperback available on Amazon. The title of the ebook is: Eagle 53 Musical Tuning.