-
interval is the distance between two notes.
-
From C to C# , 1 half-step.
-
From D to F , 3 half-steps.
-
interval name and number of half-steps from C to C
C Db D Eb E F Gb G Ab A Bb B C 0 1 2 3 4 5 6 7 8 9 10 11 12 unison Minor 2nd Major 2nd Minor 3rd Major 3rd Perfect 4th Diminished 5th Perfect 5th Minor 6th Major 6th Minor 7th Major 7th Perfect octave –
C C# D D# E F F# G G# A A# B C 0 1 2 3 4 5 6 7 8 9 10 11 12 unison Aug unison Major 2nd Aug 2nd Major 3rd Perfect 4th Aug 4th Perfect 5th Aug 5th Major 6th Aug 6th Major 7th Perfect octave -
An interval is Major when,
- upper note appears in the major scale of the lower note
- and the lower note not appear in the major scale of the upper note.
- In a Major Scale, 2nds, 3rds, 6ths and 7ths are major intervals.
- A major interval is denoted by M , like in M3 (Major 3rd).
-
An interval is Perfect when both of upper and lower appear in the major scale of the other.
- A perfect interval is denoted by P, like P5 (Perfect 5th)
-
A Minor interval is obtained by reducing a major interval by one half step.
- A minor interval is denoted by m, like m7 (Minor 7th)
-
“Any major or perfect interval can be augmented by raising the upper pitch one half step or by lowering the lower pitch one half step” <… HERE!!
| Half Steps Between Notes | Interval Name |
|---|---|
| 0 | Perfect unison/diminished second |
| 1 | Augmented unison/minor second |
| 2 | Major second/diminished third |
| 3 | Augmented second/minor third |
| 4 | Major third/diminished fourth |
| 5 | Perfect fourth/augmented third |
| 6 | Augmented fourth/diminished fifth |
| 7 | Perfect fifth/diminished sixth |
| 8 | Augmented fifth/minor sixth |
| 9 | Major sixth/diminished seventh |
| 10 | Augmented sixth/minor seventh |
| 11 | Major seventh/diminished octave |
| 12 | Augmented seventh/perfect octave |
| 13 | Augmented octave |