How do we describe a melody precisely, and how does a composer build a whole movement from a small motif?
Analyse melody using contour, intervals, range, phrase structure and motivic development, and account for how motifs are transformed across a movement
A focused answer to the H2 Music outcome on melody. Contour, intervals, range and tessitura, phrase structure and cadence, and the techniques by which a small motif is developed across a movement.
Reviewed by: AI editorial process; not yet individually human-reviewed
Have a quick question? Jump to the Q&A page
Jump to a section
What this dot point is asking
SEAB wants you to describe a melody precisely using the standard analytical vocabulary - contour, interval content, range and tessitura, and phrase structure - and to explain how a composer builds a whole passage or movement from a small melodic idea. The central insight is that melody is not just a tune to be enjoyed but a structured object whose shape and growth can be accounted for in technical language.
The answer
The musical concept: describing a melody
A melody can be pinned down along several dimensions, and a good analytical answer names each.
Contour is the overall shape of the line: ascending, descending, arch (up then down), inverted arch (down then up), wave, or static. Describe it in plain terms and then locate the high point (the melodic climax).
Interval content is whether the melody moves by step (conjunct motion) or by leap (disjunct motion), and which intervals predominate. A largely conjunct, scalic line feels smooth and vocal; a leaping line with sevenths and octaves feels angular and instrumental.
Range and tessitura. The range is the distance from lowest to highest note; the tessitura is where the melody mostly sits. A wide range with a high tessitura suggests a virtuosic or expressive idiom; a narrow range suggests a folk-like or chant-like one.
Phrase structure. Melodies group into phrases, often heard as question and answer. A four-bar antecedent that ends open (an imperfect or half cadence) answered by a four-bar consequent that ends closed (a perfect cadence) forms an eight-bar period. Periodic, balanced phrasing is a Classical-style fingerprint; irregular or extended phrasing is more Romantic.
Named repertoire: the motif as a seed
A motif (or motive) is the smallest melodic-rhythmic cell that retains identity when repeated or transformed. The supreme example is the four-note motif opening Beethoven's Symphony No. 5: three repeated notes and a falling third, which saturates the movement. Wagner's leitmotifs and the recurring idee fixe of Berlioz's Symphonie fantastique extend the same principle across whole works.
The technique: motivic development
Composers transform a motif by a recognised set of operations:
- Sequence: the motif repeated immediately at a higher or lower pitch.
- Inversion: the intervals turned upside down (a rising third becomes a falling third).
- Retrograde: the motif played backwards.
- Augmentation and diminution: note values lengthened (augmentation) or shortened (diminution).
- Fragmentation: using only part of the motif, often to build tension.
- Transposition and modulation: restating the motif in a new key.
Examples in context
Example 1. Beethoven, Symphony No. 5 in C minor, first movement. The four-note motif is stated, immediately sequenced, then fragmented and tossed between strings and winds. Augmentation in the horn-call transition and relentless repetition show how a single cell can generate an entire sonata-form movement, the textbook case of motivic economy.
Example 2. Mozart, Eine kleine Nachtmusik, first movement. The opening theme is built from balanced antecedent and consequent phrases with crisp perfect cadences, a model of Classical periodic melody. Comparing its tidy symmetry with Beethoven's motivic intensity shows the range of melodic construction within the Classical and early Romantic styles.
Try this
Q1. Define contour and give two contrasting examples of melodic contour. [2 marks]
- Cue. Contour is the overall shape of a melodic line; for example an arch (rising then falling) versus a descending line that falls steadily from a high opening note.
Q2. Explain the difference between an antecedent and a consequent phrase. [2 marks]
- Cue. The antecedent is the opening phrase that ends with a weaker, open cadence (imperfect or half), posing a question; the consequent answers it and ends with a stronger, closed cadence (usually perfect on the tonic).
Q3. Name three techniques a composer uses to develop a motif and describe the effect of one of them. [4 marks]
- Cue. Sequence, inversion, augmentation (also diminution, fragmentation, retrograde). For example, augmentation lengthens the note values so the motif sounds broader and more weighty, often building grandeur or signalling a structural arrival.
Exam-style practice questions
Practice questions written in the style of SEAB exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
Original8 marksYou hear the opening of a Classical-style movement: a four-bar phrase rises by step to a high point in bar 2, then falls back and closes with a clear perfect cadence, answered by a near-identical four-bar phrase that ends on the tonic. Describe the melody using appropriate terms, and explain what makes the two phrases sound like a balanced pair.Show worked answer →
Identify the features. Contour: the first phrase is an arch (rising then falling); range is moderate, sitting within an octave. Phrase structure: two four-bar phrases form an eight-bar period. The first is the antecedent, closing with an imperfect or half cadence feel of incompleteness (here the prompt says a perfect cadence, so treat it as a closed antecedent); the second is the consequent.
Link to style. Balanced four-plus-four phrasing with question-and-answer melodic shape is a hallmark of the Classical periodic style (Haydn, Mozart). The near-repetition of the opening creates parallel construction; the consequent reaching a firmer tonic close gives the sense of resolution.
Evaluate. Markers reward correct use of contour, antecedent and consequent, period, and cadence, plus the observation that the symmetry and the shared opening motif make the phrases a matched pair. A strong answer names the cadence types precisely and comments on the high point (climax) of the arch.
Original10 marksChoose any one movement you have studied that grows from a short opening motif. Explain how the composer develops that motif across the movement, referring to at least three different transformation techniques.Show worked answer →
Identify the motif. State the motif in words (for example, a falling third followed by a rising step) and give its bar location.
Account for development. Choose three techniques and show each with a bar reference: sequence (the motif repeated at successively higher or lower pitches), inversion (the intervals turned upside down), augmentation or diminution (note values lengthened or shortened), fragmentation (only part of the motif used), and transposition into new keys. Beethoven's Symphony No. 5 first movement is the classic case: the four-note rhythmic motif is sequenced, fragmented, and passed between instruments.
Evaluate. Markers reward a clearly identified motif, three correctly named and located transformations, and a comment on the dramatic or structural effect (how motivic working creates unity and momentum). The strongest answers link the technique to the form, noting where motifs intensify at a development or climax.
Related dot points
- Analyse harmony and tonality using triads and inversions, Roman-numeral and functional labelling, cadences, and the identification of keys and modulations
A focused answer to the H2 Music outcome on harmony. Triads and inversions, Roman-numeral and functional analysis, the four cadence types, the tonic-predominant-dominant cycle, and recognising keys and modulations.
- Analyse rhythm and metre using time signatures, simple and compound metre, syncopation, cross-rhythm and hemiola, and describe tempo and rhythmic devices in context
A focused answer to the H2 Music outcome on rhythm. Simple and compound time, beat and metre, syncopation, cross-rhythm, hemiola, polyrhythm, tempo and rhythmic devices, and how composers create momentum and surprise.
- Analyse musical form using binary, ternary, rondo, variation, sonata and through-composed structures, and account for how repetition, contrast and return create coherence
A focused answer to the H2 Music outcome on form. Binary, ternary, rondo, theme-and-variation, sonata and through-composed structures, the principles of repetition, contrast and return, and how to map and label a movement's design.
- Analyse texture using monophony, homophony, polyphony and heterophony, and describe contrapuntal devices such as imitation, canon and pedal
A focused answer to the H2 Music outcome on texture. Monophonic, homophonic, polyphonic and heterophonic textures, melody and accompaniment, contrapuntal devices including imitation, canon and pedal, and how texture shapes the listening experience.
- Compose effective melodies and develop motifs using contour, phrasing and cadence, sequence, inversion, augmentation and diminution, and apply these to word-setting
A focused answer to the H2 Music composing outcome on melody and motif. Melodic contour, balanced phrasing and cadence, motivic development by repetition, sequence, inversion, augmentation and diminution, and the basics of word-setting (syllabic and melismatic, stress and word-painting).