A French luthier living in Mallorca, has just finished crafting the world's first intervalic keyboard using components commissioned from the Japanese manufacturer Roland. As you can see from the photo, although there are still a few details to be perfected regarding the form and distribution of the keys, the keyboard is impressive. The keys of the intervalic keyboard are all meant to be equal and symmetrical, in contrast to those used in today's conventional tonal keyboards.

The great pianist, composer and writer SYDNEY D'AGVILO has discovered the second music theory in the history of music: the INTERVALIC THEORY. This involves a change of paradigm in Music which may be compared to that one played by the Relativity Theory in relation to Physics.

From Greek and Roman times to the present there has existed only one inalterable music theory based on the existence of the 12 known musical notes, whose fundamental characteristics were considered to be almost physical properties. Given this situation, the possibility of the existence of another theory of music theory was almost unthinkable, and the discovery of the INTERVALIC THEORY has therefore been totally unexpected. The book entitled El Sistema Interválico: Introducción a un nuevo espacio musical containing the results of this research has been the first book on the Intervalic Theory published in Spain by the INTERVALIC PRESS and Editorial Alpuerto publishing company. It opened up previously unimaginable possibilities for the world of music.

This new music theory substitutes musical notes with intervals but not with the usual tonally-based intervals. Instead it uses metric intervals which measure musical space. Apparently simple once discovered, the metric interval has finally made it possible to attain the age-old dream of formalizing music through its relationship with mathematics.

This change implies surprising transformations in all branches of music, from harmony to composition, from rhythm to musical forms, and from orchestras to the construction of new musical instruments (such as the piano and the intervalic keyboard): new concepts appear and old ones take on new meanings. For example, melody and harmony, traditionally separated, come together in a single magnitude, whereas enharmonics, the octave as a harmonic interval and the concepts of consonance and dissonance, disappear.

The fully developed INTERVALIC THEORY is a music theory of great breadth and complexity. In comparison traditional music theory appears as just a grain of sand encompassed by the INTERVALIC THEORY. In this way all of the music known up to the present becomes one particular case within a much broader theory.

In spite of its complexity, the substitution of harmonic tonal functions by simple mathematical operations makes learning music for beginners through the INTERVALIC THEORY surprisingly simple for both children and adults with no previous knowledge of music. In order to master Intervalic Harmonics it is necessary to know how to add or subtract natural numbers such as 0, 1, 2, 3 etc. and very little else.

A change of

paradigm in Music:

THE DISCOVERY

OF THE

INTERVALIC

THEORY

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