Music intervals explained: chart and how to hear them by ear

A music interval is the distance between two notes, measured in half steps (one fret on a guitar, or the very next key on a piano). Within one octave there are twelve: minor second (1 half step), major second (2), minor third (3), major third (4), perfect fourth (5), tritone (6), perfect fifth (7), minor sixth (8), major sixth (9), minor seventh (10), major seventh (11) and octave (12). To recognize them by ear, tie each one to the start of a tune you already know: “Here Comes the Bride” opens with a perfect fourth up, the Star Wars main theme with a perfect fifth up, “Hey Jude” with a minor third down. For songwriting, small intervals (seconds) carry a verse that talks; leaps (fourths, fifths, sixths, octaves) give a chorus its lift.

Below: the full chart with how each interval tends to sound, two audio examples, a reference song for every interval up and down, a verse and chorus built interval by interval, and a 10-minute exercise with the free note finder.

What an interval is: a number and a quality

Every interval name has two parts.

• The number counts letter names, including both ends. C up to E is a third because it touches C, D and E. C up to G is a fifth: C, D, E, F, G.
• The quality comes from the exact number of half steps. C–E (4 half steps) is a major third; C–E♭ (3) is a minor third. Seconds, thirds, sixths and sevenths come in major and minor. Unisons, fourths, fifths and octaves are called perfect.

The same interval can start on any note: C–E, G–B and A–C♯ are all major thirds, because each spans four half steps. That’s why a melody keeps its shape when you move it to another key.

Two more distinctions help when you write. A melodic interval is two notes in a row, as in a vocal line; a harmonic interval is two notes at once, as inside a chord. And direction matters: C up to G is a perfect fifth, but C down to G is a perfect fourth. The numbers of an interval and its inversion always add up to nine (5 + 4); major turns into minor, and perfect stays perfect.

Why do octaves and fifths blend so well? Their frequencies relate in simple ratios: an octave is 2:1, a perfect fifth 3:2, a perfect fourth 4:3. Traditional theory calls octaves, fifths, thirds and sixths consonant, and seconds and sevenths dissonant, with the fourth somewhere in between.

Music intervals chart: half steps, names and sound

Half steps	Interval	From C	How it tends to sound	Where songwriters use it
0	Unison (P1)	C–C	Static, insistent	Repeated notes in chants and hooks
1	Minor second (m2)	C–D♭	Tense, leaning	The pull from B to C at the end of a line
2	Major second (M2)	C–D	Neutral, like speech	Most verse melodies
3	Minor third (m3)	C–E♭	Soft, wistful	Minor chords, playground calls
4	Major third (M3)	C–E	Bright, settled	Major chords, sunny hooks
5	Perfect fourth (P4)	C–F	Open, announcing	A pickup leap into a chorus
6	Tritone (TT)	C–F♯	Restless, unstable	Inside G7 (B–F), heavy riffs
7	Perfect fifth (P5)	C–G	Strong, open, a little hollow	Power chords, heroic themes
8	Minor sixth (m6)	C–A♭	Yearning, bittersweet	Emotional leaps in ballads
9	Major sixth (M6)	C–A	Warm, sweeping	A leap that opens a phrase
10	Minor seventh (m7)	C–B♭	Bluesy, unresolved	The “7” in G7 or Am7
11	Major seventh (M7)	C–B	Dreamy, sharp	The “maj7” in Cmaj7
12	Octave (P8)	C–C	The same note, higher: a big lift	Chorus peaks, a line repeated up high

Treat the “sound” column as a tendency, not a law. The chord underneath, the tempo and the direction change the effect: a minor second resolving upward into the home note feels like arrival, while the same interval held against a chord feels like a clash.

Intervals are also what chords are made of. A major chord is a major third with a minor third on top (C–E–G); a minor chord flips them (C–E♭–G); both span a perfect fifth from root to top. Try it in the chord finder: mark C and G and it names a power chord, C5; add E and you get C major; lower that E to E♭ and it becomes C minor. One half step changes the chord’s mood. The guide to types of chords builds every common chord this way.

Hear intervals inside a melody

Both examples are short synthesized sketches with a count-in, not recordings of real songs. Listen to the distance from each note to the next.

At about 0:03 the line jumps E–G (a minor third) and then G–C (a perfect fourth), landing on a high C at 0:04. From 0:05 it steps back down, C–B (minor second) and B–A (major second), then drops A–E, a perfect fourth down, at 0:07. At 0:08 it climbs again: E–F (minor second), F–A (major third) and A–D (perfect fourth), reaching a high D at 0:09. It falls D–B (minor third) at 0:11 and B–G (major third) at 0:12, and the loop starts over at 0:14. Listen for the fourths: they lift the line, and the small steps after them bring it back to earth.

A two-bar hook, played four times. At 0:02 it repeats a high C (unison), steps up to D at 0:03 (major second) and then drops a perfect fifth, D down to G, at 0:04. At 0:05 it rises a major third, G–B, repeats the B and climbs by a half step and a whole step, B–C–D, by 0:07. The fifth at 0:04 is the one big interval in a line of small ones, and it’s the moment your ear holds on to.

How to recognize intervals by ear: a song for every interval

The classic method is simple: some music teachers have students tie each interval to the first interval of a popular song. When you hear two notes, you ask yourself which opening they sound like. The chart below uses songs from common ear-training lists; pick the one you can sing without thinking and ignore the rest.

Interval	Going up	Going down
Minor second	Jaws theme	”Für Elise” (Beethoven)
Major second	”Frère Jacques”, “Silent Night"	"Yesterday” (The Beatles), “Mary Had a Little Lamb”
Minor third	”Greensleeves”, the “Smoke on the Water” riff	”Hey Jude” (The Beatles)
Major third	”When the Saints Go Marching In”	Beethoven’s Fifth (after the three repeated notes), “Swing Low, Sweet Chariot”
Perfect fourth	”Here Comes the Bride”, “Amazing Grace"	"O Come, All Ye Faithful”
Tritone	”Maria” (West Side Story), The Simpsons theme	”Black Sabbath” (Black Sabbath)
Perfect fifth	Star Wars main theme, “Twinkle, Twinkle, Little Star” (after the repeated note)	The Flintstones theme
Minor sixth	”The Entertainer” (its first big leap), “In My Life” (The Beatles)	Love Story theme
Major sixth	”My Bonnie Lies Over the Ocean”, “My Way"	"Man in the Mirror” (chorus)
Minor seventh	”Somewhere” (West Side Story), Star Trek theme	”Watermelon Man”
Major seventh	”Take On Me” (chorus)	Rare: think of an octave, minus a half step
Octave	”Over the Rainbow"	"Willow Weep for Me”

“Happy Birthday” works too: after its repeated first note, it steps up a major second.

Four habits make the chart stick:

1. Sing it, don’t just hear it. Play or sing the low note, then sing the reference opening from it. If you land on the right note, you’ve matched the interval. If you land close but not on it, work through the exercises on how to sing in tune.
2. Learn both directions. A fifth up and a fifth down feel like different animals. “Twinkle, Twinkle” and The Flintstones theme are both fifths.
3. Start with four. The major second, major third, perfect fourth and perfect fifth are the easiest to hear and turn up constantly in singable melodies. Add the others one at a time.
4. Hear harmonic intervals as color. Two notes at once are harder to name. Listen for the character instead: a major third is bright, a minor third is darker, a fifth is hollow, a second rubs.

How intervals shape a song

You don’t need to name every interval while you write. It helps to know what each size does to a listener.

• Steps tell, leaps announce. A line made of seconds sounds like talking, which is why verses lean on them. A leap of a fourth or more makes people look up, so choruses and hooks use them.
• Put the biggest leap on the word that matters. “Over the Rainbow” opens its famous melody with an octave leap, and the whole tune grows from that jump.
• After a leap, turn back. A melody that jumps up and then moves down by step sounds balanced. Two or three large leaps in a row sound like an exercise. The guide to writing a melody covers this contour in detail.
• Use the half-step pull to end. In a major key, the step from 7 to 1 (B to C in C major) is a minor second, and it sounds like coming home. End a chorus on it and the ending feels finished.
• Minor color lives in the thirds and sixths. A melody that leans on the minor third and minor sixth above its home note sounds darker; major thirds and sixths sound brighter. The guide to music scales for songwriting shows how those notes define major and minor keys. Raise only the sixth of the minor scale and you get Dorian, one of the musical modes.
• Your range is an interval too. If your comfortable range spans an octave and a fourth, a melody that spans two octaves won’t work, whatever the key. Measure yours with the vocal range test.

A worked example: a verse of steps, a chorus of leaps

This sketch is in C major at 84 BPM. The verse loops C–Am–F–G and the chorus C–Am–G–C, one chord per bar. Chords sit above the syllable where they change, and the bottom line names the interval from the previous note (↑ up, ↓ down).

[Verse] seconds and thirds only, span C4–G4 (a perfect fifth)

C                          Am
Your  cof-  fee  cup  is   by   the  sink,
E4    E4    D4   E4   G4   E4   D4   C4
      P1    M2↓  M2↑  m3↑  m3↓  M2↓  M2↓

                F                       G
I   have-  n't  moved  it   since  you  left
C4  D4     E4   F4     E4   D4     C4   D4
    M2↑    M2↑  m2↑    m2↓  M2↓    M2↓  M2↑

[Chorus] two leaps on the title, span G4–E5 (a major sixth)

C            Am           G                    C
Come  home,  come  home,  the  porch  light's  on
G4    C5     A4    E5     D5   C5     B4       C5
      P4↑    m3↓   P5↑    M2↓  M2↓    m2↓      m2↑

What each choice does:

• The verse never leaps. Its biggest interval is a minor third, and its span is a fifth, C4 to G4. It sounds like someone talking in a quiet kitchen, which suits a scene-setting verse.
• The verse ends on a question. “Left” lands on D over G, a step above home, so the line hangs open.
• The title is a leap, twice. The first “home” jumps a perfect fourth; the second jumps a perfect fifth to E5, the highest note of the song. The repeat grows instead of copying itself.
• After the leaps, steps. The line walks down by seconds (E–D–C–B), and the last move, B up to C, is the half-step pull home.
• The whole song spans a tenth. From C4 to E5 is an octave plus a major third. Loop the verse and chorus chords in C at 84 BPM, sing the verse over the first four bars and the chorus over the last four. If E5 strains, change the key in the player: the intervals stay the same, so the melody keeps its shape. Lower voices can simply sing it an octave down.

A 10-minute exercise: sing every interval over a drone

You need the chord player, the note finder in another tab and headphones, so the finder hears only your voice.

1. Minutes 0–2, set the drone. Open a held C chord in the chord player and loop it. Sing a C that feels comfortable and check it in the note finder: C4 for most higher voices, C3 for lower ones.
2. Minutes 2–4, the chord tones. From C, sing up to E (major third), G (perfect fifth) and the C above (octave). Hold each until the finder shows it. These notes belong to the chord, so they melt into the drone.
3. Minutes 4–6, the reference songs. Start on C and hum the opening of “Here Comes the Bride”: the second note should read F. Try the Star Wars theme (G) and “Greensleeves” (E♭). If the finder shows a neighbor, your inner reference is a half step off; sing it again until it lands.
4. Minutes 6–8, the tense ones. Over the drone, sing C to D♭ (minor second) and C to F♯ (tritone). Listen to them rub, then resolve them: D♭ down to C, F♯ up to G.
5. Minutes 8–10, write a line. Sing four to six notes with exactly one leap and steps around it, and record it on your phone. Copy the note list from the finder and write the interval names under it, as in the worked example.

Common mistakes with intervals

• Counting frets but not letters. C–E and C–F♭ sound the same (four half steps) but have different names. For songwriting, half steps plus a consistent name are enough; sheet music cares about the spelling.
• Forgetting the direction. C up to G is a fifth; C down to G is a fourth. Always say “up” or “down” when you write intervals next to a lyric.
• Leaping out of range. A great octave leap that lands on a strained note loses its effect. Check the top note against your range before you build a chorus on it.
• Stacking leaps. Three big leaps in a row are hard to sing and hard to remember. Follow a leap with a step in the other direction.
• Learning references you don’t really know. A song you half remember will mislead you. One reliable song per interval beats three shaky ones.

Where Zoundroom fits: intervals, lyric and takes in one note

Zoundroom doesn’t hear pitch, doesn’t name intervals and doesn’t analyze your recordings; for that you have the note finder, and for the loop the chord player. What it does is keep the pieces of a song together, so your interval work doesn’t end up split between a notebook, a browser tab and a voice memo. Each song is a project that holds its recordings, lyrics, notes and files. Open a note in the project, write the lyric line with its intervals underneath (“Come home: P4 up, then P5 up to E5”), paste the note list from the finder and the chord player link you looped, then record the sung line right inside the note with the app on your phone: the take is inserted at the cursor, under the line it belongs to. Later you can open the same project on the web and play the takes back. Your next step: create a project for the line you wrote in the exercise and record two versions under it, one with steps only and one with a leap on the key word.

Frequently asked questions

What are intervals in music?

An interval is the distance in pitch between two notes, whether they sound one after the other (melodic) or together (harmonic). It’s named by counting letter names (second, third, fourth…) and qualified by its exact size in half steps (major, minor, perfect). A major third, for example, is always four half steps.

How many intervals are there?

Within an octave there are twelve, from the minor second (1 half step) to the octave (12), plus the unison (0). Beyond the octave come compound intervals: a ninth is an octave plus a second, which is where chord names like add9 come from.

What is the easiest way to learn intervals by ear?

Tie each interval to the opening of a song you know well, then sing it, up and down, over a held note. Start with the major second, major third, perfect fourth and perfect fifth, and check yourself with a note finder. A few minutes a day works better than one long session.

Which intervals sound sad?

In Western music, the minor third and minor sixth above the home note are what make minor keys sound darker, and a falling minor second can sound like a sigh. Context decides, though: tempo, rhythm and the chords underneath can make the same interval hopeful or heavy.

What’s the difference between a perfect and a major interval?

Unisons, fourths, fifths and octaves are called perfect; seconds, thirds, sixths and sevenths come in major and minor versions. When you invert an interval, perfect stays perfect (a fifth becomes a fourth), while major becomes minor (a major third becomes a minor sixth).

Sources

All pages checked on September 28, 2026.

• Wikipedia, “Interval (music)”: the intervals within an octave with their half-step counts and names; inversion (numbers add up to nine, major becomes minor, perfect stays perfect); melodic and harmonic intervals; compound intervals; just-intonation ratios 2:1, 3:2 and 4:3; traditional consonance and dissonance. wikipedia.org
• Wikipedia, “Interval recognition”: the method of tying each interval to the first interval of a popular song, and the reference songs for ascending and descending intervals used in the chart above. wikipedia.org
• Musicca, interval song chart (German edition): ascending and descending reference songs, including Beethoven’s Fifth, “O Come, All Ye Faithful” and “Yesterday”. musicca.com