Intervals are a way of measuring the distance between and the correlation of two notes. There are many different types of intervals. Here is a course on how to derive intervals.

Types of Intervals

Interval

Quality

Number of Semitones

Example


Perfect

0

unison2


Minor

1

minorsecond

Major

2

majorsecond


Minor

3

minorthird

Major

4

majorthird


Perfect

5

fourth1


Augmented Fourth

6

augmentedfourth

Diminished Fifth

6

diminishedfifth


Perfect

7

fifth1


Minor

8

minorsixth

Major

9

majorsixth


Minor

10

minor seventh

Major

11

majorseventh


Perfect

12

octave1

Melodic and harmonic Intervals

Notes that form an interval can be played simultaneously (at the same time) or successively (one after another). Respectively, these intervalls are called melodic (horizontal) or harmonic (vertical). Whether an interval is harmonic or melodic is not relevant for the type of an interval. A major sixth, for example, can be played harmonically or melodically.

Example of melodic Intervals

Example of harmonic Intervals

melodic

harmonic

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