Music Theory/Introduction

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What is music theory?[edit]

Music theory is the study of music; and while the term is often applied to the Western musical tradition (more on that later), there are also music theories in other traditions around the world.

It is of interest to the reader to know that music theory emerged after the actual production of music. There were people making music long before we had ideas of what a major third is, and there were groups singing tribal songs long before we got the idea of a "downbeat". Although these ideas were often practiced before they were understood, to have a knowledge of what they are and how they work reduces their difficulty and increases their potential and flexibility.

What is music?[edit]

Music can be many things, and while the subject of what constitutes music has been long debated and argued, we will not be spending considerable time on its definition. Like all art, music is highly subjective and traditional. It is hard to make sense of music from an alien culture or tradition. This book only deals with a subset of music; a very large subset though. We look at the Western Tradition of music as it has evolved from the ancient European civilizations with influences from Africa, the Middle East and Asia. We will also look primarily at written music, rather than music which is only ever performed, but we realize that music notation can almost never capture everything that makes a piece. Sheet music is a limitation that we live with. You will notice the words "sometimes", "usually", "probably", and other similar terms used frequently as music is highly subjective and many "rules" are broken.

Music usually has five basic aspects: rhythm, melody, harmony, dynamics, and timbre.

Rhythm 
Concerns note length, speed and stress — the "time" aspect.
Melody 
Concerns a series of notes — the "horizontal" aspect.
Harmony 
Concerns notes played at once — the "vertical" aspect.
Dynamics
Concerns the volume of notes — the "volume" aspect.
Timbre 
Concerns the physical sound of notes — the "texture" aspect.

Although the definition presented above may be valid to some, let's not forget the highly subjective nature of "music." That which is "music" to some is "noise" to others. Although we have many definitions, all definitions have their critics. Here is another definition of "music" that may be totally valid. "Music is a set of 'organized sounds' created from a human entity or human-created machinery."

One more definition of music may simply be the "process in finding the solution to the problem of creating an expression of emotion or disdain," which is more analogous towards mathematics. Despite the fact we don't have a universal (intracultural) definition of music we can all agree on, we can analyze music using music theory. Before we dive into music theory, we must first understand the preliminaries.