Account for Romantic harmonic language, including chromaticism, extended and altered chords, enharmonic modulation and expressive expansion of form

What this dot point is asking

SEAB wants you to account for the harmonic language of the Romantic era (roughly 1820 to 1900): how composers intensified expression through chromaticism, a richer chord vocabulary, bolder modulation and freer form, while still operating within tonality. The central insight is that Romantic harmony stretches the functional system inherited from the Classical era to its expressive limits, increasing tension, colour and delay without yet breaking the sense of key.

The answer

The musical concept: chromaticism

Chromaticism is the use of notes outside the prevailing key, for colour, intensified voice leading and expressive shading. Romantic music is saturated with chromatic passing notes, neighbour notes and appoggiaturas, and with chords borrowed from the parallel mode (mode mixture).

The technique: an enriched chord vocabulary

Romantic composers drew on a wider palette of chromatic chords:

• Seventh and ninth chords: sevenths used freely beyond the dominant, and ninth chords for richer colour.
• The Neapolitan sixth: a major chord on the flattened second degree, usually in first inversion, functioning as an expressive predominant.
• Augmented sixth chords (Italian, French, German): chromatic predominants whose augmented sixth resolves outward by semitone to the dominant.
• Chromatic mediants: chords a third apart with chromatic alteration (for example C major to E major), giving a fresh, colouristic shift.
• Altered chords: dominants and predominants with chromatically raised or lowered notes.

Modulation and form

Romantic modulation is more frequent and more remote. Enharmonic modulation reinterprets an ambiguous chord (such as a diminished seventh, or a German sixth that sounds like a dominant seventh) to pivot into a distant key. Forms expand: movements grow longer, phrase boundaries blur, and resolution is often delayed or evaded to sustain emotional tension.

Examples in context

Example 1. Chopin, Nocturnes and Preludes. Chopin's keyboard writing is steeped in chromatic harmony: chromatic passing notes, expressive seventh and ninth chords, chromatic mediant shifts and delayed resolutions, all in the service of a singing, ornamented melody. They are a clear study of Romantic chromaticism on a small scale.

Example 2. Schubert, songs and instrumental works. Schubert is famous for chromatic-mediant key shifts and enharmonic modulations that move suddenly to distant, glowing keys for expressive effect, while still resolving back to the tonic. These moments show Romantic harmony expanding the tonal map, linking to the art song.

Try this

Q1. Define chromaticism and explain why Romantic composers used it. [2 marks]

• Cue. Chromaticism is the use of notes outside the prevailing key; Romantic composers used it for colour, intensified voice leading and heightened expressive tension.

Q2. Identify the Neapolitan sixth chord and its function. [2 marks]

• Cue. The Neapolitan sixth is a major chord on the flattened second degree, usually in first inversion; it acts as a chromatic predominant, intensifying the approach to the dominant.

Q3. Explain how an enharmonic modulation works. [3 marks]

• Cue. It uses a chord that can be heard or spelled in two ways (such as a diminished seventh, or a German sixth that sounds like a dominant seventh) and reinterprets it, so the chord pivots smoothly into a remote key.