Singapore-based online bookstore - 15 million titles - 7-day local delivery - trackable
Eagle 53 My Ultimate Musical Tuning: Third Edition The Mathematics Behind Eagle 53
Paperback - English

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. Some notes are higher than usual and others are lower in varying degrees. Many chords and scales are more in tune and some new and exotic chords and scales occur as well. 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 and mathematics behind Eagle 53. 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.
The author's web site has music, pictures and information related to Eagle 53. For the web site address (if you are on an Amazon page) see the "More about the author > Biography" section below.
Click on "Visit Amazon's John O'Sullivan Page" in this section to see a video of the author playing an Eagle 53 guitar.
There is a condensed, older and cheaper eBook version of this book available on Amazon. The title of the eBook is: Eagle 53 Musical Tuning. ASIN: B07DKTK9DX
For guitarists check out The Eagle 53 Guitarist Deluxe Second Edition ISBN 9780956649287.

S$ 28.88
S$ 23.07
Local courier delivery with tracking number. Free delivery with min. purchase of $60

Available (97 copies available)
Usually delivered within 6-9 working days.
Quick, local delivery
Books at your doorstep within 5-8 working days
Peace of mind
Books sent via local courier with tracking numbers, no missing package
Flat delivery fee
Single delivery fee for any books purchased. Save more when buying more books
Competitive prices
Lowest price on most books in Singapore, all 10 million titles
Care for your books
Books sent with thick bubble wrap for protection. We're serious about book condition


Publication Date
22.86cm x 15.24cm x 0.51cm
Age Group
NA to NA
Not Applicable to Not Applicable
Lexile Level
About Author

O'Sullivan, John
JOHN O'SULLIVAN was Professor of History at Florida Atlantic University.

Also Available In