An interval is the distance in pitch between two notes.
Intervals are the building blocks of melody and harmony, and learning to recognise the different types of interval can help you understand harmony, transcribe melodies, and play by ear. It powers your sense of relative pitch, a fundamental musical ability.
(ascending major third, from C)
If one note is much higher than the other, the interval is big. If the notes are close to each other in pitch, the interval is small. Intervals can be measured in semitones (half notes) or tones (whole notes) and the different sizes of interval have different names:
|1||Semitone, Half Step, Minor Second|
|2||Tone, Whole Step, Major Second|
|6||Tri-Tone, Augmented Fourth, Diminished Fifth|
See also: Intervals Topic page
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