Intervals: The Distance Between Notes
Intervals are the smallest practical meaning units of music theory. They explain chord tones, mode color, and why a note feels stable or tense inside a phrase.
Definition
Intervals are measured pitch distances between notes that define melodic motion, chord structure, and tonal color.
Two Kinds of Intervals
The major scale is a clear reference because its degrees define default interval qualities from the root.
In natural minor, the key changes are b3, b6, and b7. For the full map, review Minor Scales.
A fast practical upgrade is chord-tone targeting. When you see 1, 3, 5, and 7 in each position, your lines resolve with intent.
For applied practice, combine Target Notes with Diatonic Chords.
- Melodic intervals are played one note after another.
- Harmonic intervals are sounded at the same time.
- Major-scale root references: 1 (unison), 2 (major 2nd), 3 (major 3rd), 4 (perfect 4th), 5 (perfect 5th), 6 (major 6th), 7 (major 7th).
Common Questions
What is an interval?
An interval is the distance in pitch between two notes. You can hear it as a sound (melodic interval) or as a chord component (harmonic interval).
What do perfect, major, and minor mean?
They describe interval quality. Unison, 4th, 5th, and octave are "perfect" types. 2nd, 3rd, 6th, and 7th are commonly major or minor types.
How does the major scale help with intervals?
From the root of a major scale, the degrees define common intervals: 1=P1, 2=M2, 3=M3, 4=P4, 5=P5, 6=M6, 7=M7, 8=P8.
Why should guitarists care about intervals?
Intervals explain why notes feel stable or tense. Chord tones are intervals from the root (1, 3, 5, 7). If you can target those, your lines resolve.
What is the fastest way to apply intervals to practice?
Use degrees as interval labels (R, 2, 3, 4, 5, 6, 7) and practice short phrases that land on a chosen chord tone in time.
Last updated: Feb 8, 2026