# Quadrium - Music Theory Series Part 1 - Intervals

## Contents |

## Introduction

Hello all.My name is Dogukan Ozturk. Welcome to my new Music Theory Series Lessons. I know that Andrew has covered all of this subject. But i have decided to do it in my way also For the first part of the series we will start with the intervals.

## Intervals

**Intervals** are the distances between two notes. Each interval will have a number - 1, 2, 3, 4, 5, 6, 7, 8. These numbers are the distance between two notes, based upon counting the lines and spaces on the staff.

Intervals may be described as:

-Vertical or harmonic, if the two notes sound simultaneously.

-Horizontal, linear, or melodic if they sound successively.

Intervals may be roughly classified as:

-**Diatonic** intervals, between the notes of a **diatonic scale**

-**Chromatic** intervals, non-diatonic intervals between the notes of a **chromatic scale**

-Minute intervals (commas, and microtones), sometimes so small that the difference in pitch between the two notes cannot be perceived.

For example, if we count lines and spaces, starting from C and ending on G, we count: C,D,E,F,G = 1,2,3,4,5, Therefore, the interval from C to G is a fifth (5th).

We can also keep counting past 8, through 9, 10, 11, 12, and 13, but usually not past 13.

## List of interval types

0-Perfect Unison-------P1

1Minor- Second-------m2

2Major- Second------M2

3-Minor Third----------m3

4-Major Third----------M3

5-Perfect Fourth------P4

6Diminished- Fifth-----d5---Tritone

6Augmented- Fourth--A4---Tritone

7-Perfect Fifth--------P5

8-Minor Sixth---------m6

9-Major Sixth---------M6

10-Minor Seventh----m7

11-Major Seventh----M7

12-Perfect Octave----P8

## Interval quality

Intervals also have another identifier in addition to number called the interval quality. Intervals can be called **Major** (M), **minor** (m), **Perfect** (P), **Augmented** (A), or **diminished** (d).

**Major Intervals:**

**Minor Intervals:**

**Perfect Intervals:**

**Augmented Intervals:**

**Diminished Intervals:**

- The intervals contained in the table are
**diatonic**to C major. All other intervals are**chromatic**to C major.

Hope you enjoy. See you in next lesson of Music Theory Series. Keep rocking