Melody, harmony and tonality in the Western Classical Tradition: melodic devices (sequence, conjunct and disjunct movement, ornamentation), harmonic features (cadences, pedal, diatonic and chromatic harmony) and tonality (major and minor keys, modulation).

What this dot point is asking

This dot point covers melody, harmony and tonality and the devices linked to each. You need to recognise melodic devices (sequence, conjunct and disjunct movement, ornamentation), harmonic features (the four cadences, the pedal, diatonic and chromatic harmony), and tonality (major and minor keys, and modulation). The appraising paper asks you to identify cadences, describe the melody, and state the tonality, all with accurate vocabulary.

Melody and melodic devices

Describing a melody well means naming its shape (conjunct or disjunct), its range (narrow or wide), its phrasing, and any devices (sequence, repetition, ornamentation). Baroque melodies (like the Bach Badinerie) are often fast, ornamented and use sequence; Classical melodies are often balanced and clear; Romantic melodies are often long, expressive and wide-ranging.

Harmony, cadences and the pedal

Cadences are punctuation: perfect and plagal are like full stops, imperfect is like a comma or question mark, and interrupted is like a sudden twist. Diatonic harmony uses only the notes of the key (it sounds settled); chromatic harmony brings in notes from outside the key (it adds colour or tension). Recognising a cadence from how finished or surprising a phrase sounds is a common appraising skill.

Tonality and modulation

Stating the tonality (major or minor) is usually straightforward by ear; spotting a modulation means hearing the music settle into a new key (often brighter when moving to the dominant, or to the relative major from a minor key). In the Western Classical Tradition, forms are driven by tonality: binary form moves to a related key and back, and sonata-style movements modulate to the dominant for the second subject.

Examples in context

A Baroque movement such as the Bach Badinerie has a fast, partly ornamented, partly disjunct flute melody, uses sequence, sits in a minor tonality, modulates to the relative major and back, and is punctuated by clear cadences. A Classical theme might be conjunct and balanced, in a bright major key, ending its first phrase on an imperfect cadence (a question) and its second on a perfect cadence (an answer). A Romantic passage might use chromatic harmony and a long dominant pedal to build tension before resolving.

Try this

Q1. What is the difference between conjunct and disjunct melody? [2 marks]

• Cue. Conjunct moves mostly by step (smooth); disjunct moves by leaps (angular).

Q2. Name the four cadences and how each sounds. [4 marks]

• Cue. Perfect (V to I, finished), imperfect (ending on V, unfinished), plagal (IV to I, the "amen"), interrupted (V to VI, a surprise).

Q3. Explain what modulation is and to which keys music usually modulates. [3 marks]

• What the marker wants. A change of key during a piece, most often to a closely related key: the dominant, the subdominant, or the relative major or minor, often returning to the home key.