A melody = the motion of one note through time. All expressiveness comes from this motion'sdirection, span, duration, metric position—these four things.
This skill deals withthis line itself—regardless of what chords it's paired with (that's mc-harmony),
nor what lyrics it's paired with (that'slyric writing's business).
Which sections to read by task
| Symptom／Task | Read |
|---|---|
| Writing a melody from scratch | §1 Must-fill before starting → §2 → §5 |
| Melody is bland and boring | §2 Span ＋ §8 Anti-cliché |
| Can't sing it / hard to sing | §3 Hard limits on leaps ＋ §4 Range |
| Setting the key for a specific singer | §4.2 Passaggio |
| Every step is guessed | §8 Predetermined key and checklist |
| Loose, can't grab hold of it | §7 Motive and syncopation |
| Strong start, weak finish | §7.4 ＋ §6 Closure |
| Buried by the accompaniment | §9 Diagnostic table |
| Ending isn't final enough | §6.3 |
Boundaries: what this skill doesn't cover
| Not here | Where it belongs |
|---|---|
| How to choose chords, matching melody and harmony | mc-harmony |
| Form, how long sections are, how to assemble the whole piece | mc-form(music theory)／mc-arrangement-arch(decisions) |
| Independence of multiple voices and avoiding parallels | mc-counterpoint |
| Modulation | mc-modulation |
| The rhythm pattern itself | mc-rhythm-groove |
| How words are set to notes, inverted tones, rhyming | lyric writing's business |
| How the voice sings it (breathy voice/dynamics/pitch correction) | mc-vocal-direction |
| What instrument plays the melody | mc-orchestration |
| The complete catalog of modal scales | reference.md |
★ The boundary with lyric writing is especially important:This skill deals with "whether this line sounds good and is easy to sing," lyric writing deals with "whether these words can be set onto it." Syllable splitting, excess syllables, and inverted tones are all over there. This skill only needs two corollaries from it: when words come before the music, the lyrics of the same song are read from
meta.upstream.lyrics, and as many characters as there are per line, that's how many notes there are (one character, one syllable in Chinese); one line is one phrase; the lexical tones of Chinese words will constrain which character a large leap lands on (mc-style-chinese-pop§3.2). When there are no lyrics, the melody is responsible only to itself.
1. Must-fill before starting
| Must-fill | How to ask |
|---|---|
| ① Central range | A range of one octave, fixed in writing.If you don't fill this in, the melody will fall apart |
| ② Who will sing it | Range, where the passaggio is.This determines the key（§4.2） |
| ③ Where the climax is | Down to which measure. Placed at2/3–3/4 of the whole pieceis the default |
| ④ The direction of this line | Overall ascending or descending? Why |
2. Direction and range: movement itself is expression
2.1 Direction
| Movement | Expression |
|---|---|
| Ascending | Tense, elevated;ascending at the end of a phrase = asking, throwing out, speaking to the other person |
| Descending | Relaxed, stable;descending at the end of a phrase = answering, nodding, sighing, being certain |
| Narrow up-and-down oscillation | Hesitating, indecisive, neither ascending nor descending |
For phrases of more than three notes, judge the overall direction by the relative height of the first and last notes. If the arrival at the last note islocal motion opposite to the overall direction, the sense of overall direction will beweakened。
★ A harmonic background can rewrite the meaning of direction: if an ascent lands on a stable note through a harmonic mechanism (such as G7→C landing on the tonic), the "feeling of asking" is replaced by a "feeling of resolution." To emphasize a question, remove what is blocking it—don't land on a stable note.
Body analogy: ascending = rising on tiptoe to look into the distance; descending = bending down to look nearby.
2.2 Range
| Range | Expression and limits |
|---|---|
| Stepwise motion | Smooth and flowing, unobstructed; moving up and down along the scale = smooth increase and decrease of tension, extremely common. Adding second-degree auxiliary notes as decoration = maintaining the contour while increasing movement |
| Semitone | The narrowest interval, expressing subtlety and delicacy; a melody containing semitones hasa sense of brilliance and depth。★ Overuse (especially chromatic scales with accidentals) → neurotic, pathological, grotesque, and must be restrained |
| Leap | Dramatic, with large swings of emotion;the word at the landing point of a leap will be emphasized |
| Repeated same note | Low register = calm confession, restrained narration (or forced suppression); high register = sustained tension, unceasing outcry. ★ When the pitch does not move, the listener's attention turns to rhythm → pair with syncopation and varied note values = expression close to speech |
"How to use semitones well" is one of the two major sources of melodic feeling(the other is the density of the pentatonic scale).
Range × speed: the narrower the interval, the easier it is to sing and the more it adapts to any speed; the wider it is, the more it requires slow speed and preparation. A large leap needs sufficient duration at its starting point or ending point (or both)to be natural and singable. Rapid continuous alternation between high and low notes is the easiest to make stiff.
3. Leaps: preparation and landing
3.1 ★ Three hard limits
- A single leap must not exceed a sixth—buta perfect octave is instead easy to sing and pleasant to hear, and can be used
- For leaps of a fourth or more, at most 2 consecutive leaps in the same direction, and the total interval at the two ends must not exceed one octave
- Compliant: 3+5=7 degrees, 4+4=7 degrees
- Violating: 5+5=9 degrees, 4+4+4=10 degrees — unnatural, hard to sing
- A seventh leap is most commonly split into 3+5 or 4+4 with an intermediate note(stepping-stone style, taking it in two steps)
3.2 Leaping up is easy, leaping down is hard
(Force-applying movement is controllable; force-releasing movement is hard to stabilize.)
Two remedies for wide downward leaps：
- The landing point naturally carriesan accent— foresee it andactively use it
- Stretch the onset fully + decrescendo, build up emotion and tension at the starting point before leaping
In narrow leaps, downward leaps are actually easier(releasing force)—"a short high note leaping downward" placed at the beginning of a phrase as a phrase-initial accent is a common technique.
3.3 Four devices
| Device | Method |
|---|---|
| タメ (charge-up) | Leapbeforeplace 1 to severalopposite-directionnotes (usually stepwise), like a wind-up before a big move. Can also be placed midway through the leap |
| Run-up (starting run) | Before the leap, place 1 to severalsame-directionstepwise notes. The starting-run note can be within or outside the leap interval |
| Landing cushion | After reaching the leap's landing pointaftercontinue with 1 to severalsame-directionstepwise notes, softening the landing impact—especially effective for downward leaps |
| Rebound | After a large leapopposite-directionstepwise = landing rebound. ★ This rebound note can simultaneously serve asthe charge-up for the next leap, forming a chain of "leap → bounce (charge) → leap → bounce (charge) → leap" |
3.4 Leaps exceeding an octave
Strongly cuts off the melody(cannot be segmented as a single phrase). Reverse use: pull the registers apart at the segmentation boundary → create apseudo two-voicemelody (a low-register motif and a high-register motif in dialogue).
3.5 The value of "unnaturalness" (all must be restrained; abuse renders it ineffective)
| Technique | Effect |
|---|---|
| Unprepared large leap | Sudden emotional outburst(filling in the intermediate notes makes it smoother, but destroys the explosive force) |
| After the leap, no opposite-direction resolution; continue in the same direction | A special切なさ(heart-wrenching) |
| Consecutive leaps with weak internal connections | Weightless buoyancy,inorganic pop feel |
| Misplaced semitones, no discernible scale affiliation | Artificiality, detached irony |
| Augmented intervals | Non-Western feel |
General formula: embed local unnaturalness as a "hook", then finally resolve it in a natural way.
4. Range and voice
4.1 Basic rules of range
- First set the melody's central range at about 1 octave, with each phrase's center of gravity falling within it— otherwise the melody will diverge, or even sound like several voices mixed together
- The actual range of the whole piece is about 1.5 octaves, at most 2(this is exactly the usable range of most voices and instruments)
- Controlled within 1 octave = narrow-interval melody, intimate, easy to sing
- Spanning 2 octaves = strong dynamics but hard to sing
A phrase's position within the range determines its effect：
| Position | Effect |
|---|---|
| Center of gravity high | Bright, full of tension;Breaking through the vocal range ceiling, the vocal tension sharply increases; extremely high = expression of pain |
| Center of gravity low | Calm and relaxed;falling below the floor = heavy; extremely low = powerless and slack |
★ The same movement has different effects at different positions in the vocal range：
- Ascending in the middle of the vocal range = moderate tension
- Ascending toward the top, breaking through the vocal range = tension significantly amplified
- Ascending from low back to the middle = the increase in tension is offset by "low notes turning soft,"and can even have a relaxing effect
- The same phrase-ending ascent: low register = a relaxed question; high register = an earnest request, or even an interrogation
Pitch character is relative: the same middle C is heard as a "high note" in a low-register melody, and as a "low note" in a high-register melody.
4.2 ★ The passaggio determines the key
Male voices are about an octave lower than female voices; by convention,male voices are notated an octave higher than they actually sound. Pop practice: male voices rarely use the low register and often use the high register; female voices rarely use the extremely high register and often use the low register.
| Vocal register | Character |
|---|---|
| Chest voice | The root of realism and intimacy in pop music; the character of pitch movement is expressed most strongly here. Tension in the high register can expressearnestness(the urgency of wanting to convey something) |
| Middle voice (mixed voice) | The vocal folds are semi-closed, extending the range upward; bright and open timbre = positive, outward, strong expression. ★ The same high-register phrase: sung in chest voice = tense pleading; sung in middle voice = open, gazing into the distance—the choice of register changes the character of the melody |
| Falsetto | Treat it as a different instrument from the chest voice: pure and delicate, suited to refined and gentle expression. Limitations: few overtones → diction is slightly blurry; difficult to vary dynamics → not suited to intimate confession or large emotional swings |
| Chest voice flipping up into falsetto | The sense of desperationof being willing to crack in order to reach the high notes → intense longing, extreme setsunasa |
★ "Does this male singer have a middle voice, and where is the passaggio?" is the major premise that determines the vocal range and key—confirm it first. For singers with an awkward passaggio:design the vocal register phrase by phrase(this phrase in chest voice, that phrase in falsetto/middle voice), so that no phrase crosses the passaggio.
Set the basic octave in the middle of the usable extreme vocal range—leave margin, while preserving the expressive option of "deliberately touching the limit."
4.3 Sing-along effect
Listeners hum along in their heads.
- Being induced into synchronizationby easily understood repetition, afterward, even if the singer sings the later high notes effortlessly,listeners still feel they are "high and tense"
- A sudden high note at the beginning or start of a phrasegives no time for synchronization → it is externalized and appreciated as "showing off technique"
When writing, be clear: whether this section is meant to be "sung along with" or "watched and appreciated," and actively induce it.
5. Duration
5.1 Available Range
Commonly used sixteenth notes to whole notes; tuplets usually use only 1-beat or 2-beat triplets. Principle: Pop music must keep the listener in sync—durational combinations must not make the listener lose the beat.
- When the whole piece has a triplet feel, don't write triplets everywhere,notate it as 6/8, 9/8, 12/8 instead
- First at BPM ≈ 100 this "duration ≈ length" medium tempo, examine the character, then consider deviations at extreme tempos
5.2 Long Notes and Short Notes
| Expression | |
|---|---|
| Long notes | Sustained force = tension; the note can be shaped internally (vibrato, crescendo/diminuendo) → Climaxes often place long notes in the high register(the strongest expression of tension) |
| Short notes | Light and agile; singing with force = sharp, flung out. Short notes in the low register are offset by a sense of heaviness |
- Continuous long notes + little pitch movement = sustained tension; butdragging on too long becomes slack and boring—insert leaps, or weave short notes between the long notes
- Long notes + large leaps = while smoothing out large pitch movements,amplify the sense of scale
- Narrow intervals × short notes = a melody close to speech(news-broadcast speech rate is about equal to eighth notes at BPM 120, and doesn't feel fast)
- Large stretches of continuous short notes = light, rolling;lasting too long = neurotic, obsessive
★ When long and short are mixed: long notes are primary (weight and natural accent), short notes are secondary—regardless of beat position. Common cycle: short noteapproacha high long note → tension → low short noterelease → approach again... Extreme compression = alternating long-short-long-shortleaping feel(common in 6/8, 12/8), useful butvery easily becomes predictable。
6. Cadence
6.1 Duration Treatment
Lengthening the cadential note = motion stops. Two follow-ups: add a short notereleasetension, or use a restunload force。
★ Duration alone cannot close a cadence: if harmony and mode (scale degree) do not cadence at the same time, the sense of ending is only half-finished.Reverse use: let the chorus settle but keep the whole piece unresolved, leaving a "words left unsaid" feeling.
6.2 Grand Cadence (End of Section / End of Piece)
| Technique | Effect |
|---|---|
| Ritardando + diminuendo | Bleeds off energy."Notated ritardando" = write each note before the cadence progressively longer, or insert a bar of 2/4 |
| Fully lengthen the note before the cadence (building force) then land onshort noteon | Tension is held until the last moment, then instantly released |
| The melody omits the cadential note, leaving it to the accompaniment | Like a dreamy afterglow with the breath cut off |
| Not slow, not long; end with an accented short note | Crisp, decisive, strong will(can add one more accented short note to reinforce) |
6.3 Rests Are Part of the Melody
Rests play two roles in melody that have already been fully explained elsewhere; here they are only put in place: for the segmentation signal, see §7.2, the first of the six causes (long durations and rests are the clearest); for the means of releasing tension at the end of a phrase, see §6.1, the durational handling of the large close (a rest can replace a short note to complete the release).
7. Motive → Phrase → Section
7.1 Terminology Hierarchy
部分动机（不能独立，但有可辨特征）≈ 词 标 a1、a2，变体加 '
→ 动机：能独立的最小旋律单位，至少 1 小节 标 a、b
（再短就无法独立判断拍位）
★ 重复时通常继承节奏轮廓、带变化地重复
→ 小乐节：通常 2 个动机 标 A1、A2
→ 乐节：最常 8 小节，4 小节也常见 标 A、B
（其他小节数多是对 8 或 4 的增减）
由一个情绪统一的整体
★ Different motives can share part of a motive(e.g., a'' = a1' + b2)——this is an important means of structural unity。
the same material, its character determined by context: the same motive, placed after a static phrase, is a small climax, placed after a soaring phrase, it is a soothing answer.
7.2 The Six Causes of Segmentation (ordered by clarity)
- Long durations and rests(clearest)
- Intervallic leaps(cutting off pitch continuity)
- Motor-type repetition(each repeating unit forms its own segment)
- A clear close
- A clear beginning(retrospective recognition: only when the beginning of the next phrase is recognized is it confirmed that the previous segment has ended)
- Repetition/contrast(likewise retrospective recognition)
Segmentation at 2, 4, and 8 measures is easiest to grasp; grouping in odd measures (3+3+2, etc.) is hard to perceive.
| Effect | |
|---|---|
| Strong segmentation(tonic + strong beat + tonic chord + long note/rest) | A feeling of starting over—suitable for opening a new section, reinforcing repetition/contrast.But it cuts the song in two, so use it cautiously outside the end of a section |
| Weak segmentation | Smooth and continuous, atmosphere sustained; may blur structure or create a sense of stagnation |
7.3 Call-and-response: the most basic engine
Given two segments,the latter is heard as a response to the former(it need not be a literal question and answer).
- Similar phrases in response = echo type; contrasting phrases in response = continuation type;the "answer" can even appear first(stabilize the form first, then pose the question)
- Paired response is the most stable but predetermines the key；Bead-string typeChain-like extension develops richly but risks becoming diffuse
- Call-and-response operates in parallelat multiple levels of motive/phrase(a motive responds both to the immediately preceding motive and to the entire preceding phrase)
7.4 Placement of the climax
By default it is placed at 2/3–3/4 of the whole piece.
A climax section has three recognizable signals: higher register, longer durations, greater dynamics, and the instrumentation also tends toward breadth (Wen Hailiang p0149). There are two paths to advancing toward the climax,two accounts side by side： Gradual type: the melody uses continuous ascent, combined with contrasts of rhythmic density and sparsity, changes in harmonic language, changes in timbre or tonality, and drum fills at the seam between the statement section and the climax section, making the forward drive solid (Wen Hailiang p0149). Overcoming motion with stillness: the statement section comes to a complete stop, then cuts directly into the climax without transition, completing the advance through contrast itself; the cost is that it requires a sufficiently clean pause point, and if the connection is poor it feels abrupt (Wen Hailiang p0151).
The endings of a climax point and a climax section are also different: after a climax point has been pushed forward, the rhythm often suddenly slows down and broadens, giving a complete closure; a climax section must continue on the basis of high emotion and must not rush to close (Wen Hailiang p0149).
Solution for a strong start but weak finish: check the position of the climax and the way it ends,modify the ending of the motif/phrase, and reinforce the climax in the latter half of the chorus; if the climax still feels insufficient after repeating several times, you can add a continuation-like supplementary section and then do a volume fade-out ending, which is more complete than cutting it off directly (Wen Hailiang p0152).
7.5 Index of musical idea development: how a motif grows into a section, and how a section grows into a song
How a motif grows into a section, and how a section grows into a song, belongs to mc-development(L1). It has material and form[].development, where the ten techniques, the boundary between development and piling up, and the landing points in pop songs are all located; this skill only deals with how the motif and phrase themselves are written.
8. ★ Anti-formula (predetermined harmony)
Predetermined harmony = the listener can read the next step, and everything unfolds as expected—this is the problem most to be guarded against in melody writing.
8.1 List of high-risk patterns
- The same phraserepeated verbatim more than 3 times
- Motifmoving in parallel with the chord progression(by the 3rd chord the listener has already read the whole song)
- Formulaic harmonic rhythm: one chord per bar, dominant chord at the end of 8 bars
- Second versecopyingthe A−A' opening of the first verse (the listener immediately predicts that what follows must be B−C)
- Long-short long-short jumping rhythmrunning through the whole song
- Textbook leading tone→tonic, iv→iii resolutionplayed straight
8.2 Six countermeasures
- The 3rd repetition must change; second verseomit the repetition at the beginning（A-A'-B-C → A-B-C）
- Use expectation to turn things around again: first induce the listener's prediction, then at the very point that was predictedbetray it greatly—use surprise to schedule the climax
- stretch the melodic line: a long arc not chopped up by motifs (use anticipation to glue the rhythmic shape together, dive deep → rebound upward to become the climax → a strong chromatic appoggiatura as the second center of gravity → calm closure). ★ Long line = sense of direction + relay of diverse motion devices, not simply having no breakpoints (that only makes it dragging)
- Keep the material minimal: any new phrase must clearly state "how it differs from what came before and what continues from it" (partial contrast + partial repetition).Songs with less material are easier to understand and more moving
- Use suspensions, appoggiaturas, and anticipations to break the ready-made resolution
- Between "mediocrity" (copying ready-made techniques, reassuring but worthless) and "unintelligibility" (deviating too far from shared form and becoming a wall), use the strong internal logic of the work to support originality
8.3 Distortion + answer
Smooth throughout = boring; a point of **ibitsu (distortion)** is needed to stir things up. ★ But distortion must be answered(a moving resolution after a string of unstable notes; a leap defying the accent = endorsement of strong emotion), otherwise it is just a defect.
Once the earlier clever ideas have convinced the listener that "this song is worth listening to," even if a plain line appears later, the listener will patiently wait for "a good answer to come later."
9. Diagnostic Table
| Symptom | What to check → What to prescribe |
|---|---|
| Plain and boring | All stepwise/chord tones/on-beat? → Add non-chord tones (appoggiaturas/suspensions), syncopation, leaps + buildup; check whether pentatonic density and chromatic usage are unchanging |
| Every step is guessed | Repeated as-is 2 or more times? Motif moves in parallel with the chords? → Vary it the 3rd time, omit the repetition, or set up then flip it for the climax |
| Loose, hard to grasp | Too much material, continuously brand-new motifs? → Share part of the motif, keep repeated elements in new phrases; narrow the range to 1 octave; divide by 2/4/8 bars |
| Strong start, weak finish | Climax position and ending? → Put the climax at 2/3–3/4; change the motif/phrase'sending method; strengthen the second half of the chorus |
| Hard to sing | Leap over a sixth? More than 2 consecutive leaps in the same direction or total span over an octave? No duration at either end of a big leap? Crossing the passaggio? Augmented second? → Split sevenths as 3+5 / 4+4, add buildup/run-up/landing, assign vocal registers phrase by phrase |
| Covered by the accompaniment | Does the opening land on a strong beat together with the bass? Does the melody imitate the rhythmic pattern? Does it stick to the beat throughout? → Offset the starting point, make way for or answer the offbeat, leave gaps |
| Like an instruction manual / school anthem | Are functional progressions like leading tone → tonic too straightforward? → Break them with suspensions/appoggiaturas, mix in pentatonic, avoid the strongest cadence at phrase ends (tonic + I + strong beat) |
| Pentatonic melody has no personality | Just circling among easy neighboring tones? → Change the mode, offset the pentatonic tonic from the key tonic, insert leaps/arpeggios to dilute, add decorative chromaticism |
| Ending is not conclusive enough | Duration stops but mode/harmony does not? → Land on tonic + I + leading tone close = strongest cadence; for lingering resonance, do the opposite |
| Monotonous throughout | Does every section start on the tonic chord? Are interludes all the same length? → Start one section from a reverse cycle, omit a phrase in the second half, repeat + modulate in the final chorus |
10. Correspondence with ARR-SPEC fields
| Field | Which section of this skill |
|---|---|
form[].melody_register |
§4.1（Sections need contrast） |
hooks.vocal_hook |
§7.1 Motif + §8 |
vocal.register_arc |
§4.2 (consistent with the passaggio) |
meta.key |
★ §4.2 —— The key is determined by the singer's passaggio, not by choosing the key first and then finding the singer |
11. Must pass after writing
- Central rangeWithin one octave, and the whole song does not exceed 1.5–2 octaves
- No single leap over a sixth (except octaves)
- Consecutive leaps in the same directionNo more than 2 times, total span at both endsNo more than one octave
- Every big leap hasbuildup/run-up/landing cushion/reboundat least one of
- Confirmed the singer'spassaggio, and no phrase crosses it
- The climax is at 2/3–3/4 , and you can say why it is the climax
- No exact repetition 3 timesphrase; the second verse omits the repeated opening
- between motivesshares part of the motive, not a pile of entirely new material
- there is onedistortion, and itis answered
- at the closeduration, harmony, and mode all arrive at the same time(do the opposite only when you want lingering resonance)
Appendix: Sources
- Hiroshi Takayama, Melody Writing for Popular Music Composition, Expanded Edition—the backbone of §2–§9.
Parts of the book not covered in this skill:
Lyric-music alignment → a lyric-writing matter, not in this package; musical form and whole-song assembly →
mc-form; Modal scale catalog → reference.md。 - Jimmy Kachulis《The Songwriter's Workshop: Melody》— The four motive types (parallel/similar/oblique/contrasting) and modal melody (major blues, Mixolydian, Dorian, pentatonic) are organized in reference.md。
- Schoenberg, Fundamentals of Musical Composition— another account of phrase construction and motivic development, kept side by side with the Japanese onekept side by side, see reference for the differences.
- Richardson modes—modal catalog.
- Wen Hailiang, Popular Music Academy Series Textbook · Arrangement—§7.4 techniques for building to the climax and handling the coda.
- Huang Huwei, Modulation Methods; Li Chongguang, General Textbook of Basic Music Theory—reference.md §3.5 criteria for non-scale tones and stable scale degrees in pentatonic cadences.