The A section is a flowing stream of triplets in the right hand over a steady bass. Harmonically, it establishes the home key but immediately begins to destabilize it.
The Opening (Measures 1–8):
The First Large-Scale Shift (Measures 8–20):
The Return:
This Impromptu is a textbook example of how Schubert used harmony to create a "psychological" narrative—wandering through keys not just to fit a form, but to evoke a sense of longing and searching.
Unveiling the Harmonic Genius of Schubert: A Deep Dive into Impromptu Op. 90, No. 2
Franz Schubert's Impromptu Op. 90, No. 2, is a timeless masterpiece that has captivated music lovers for centuries. This piece, part of a set of four impromptus, showcases Schubert's exceptional skill in crafting memorable melodies and innovative harmonies. In this article, we'll embark on a harmonic analysis of Impromptu Op. 90, No. 2, exploring the intricate web of chords, keys, and progressions that make this piece a true marvel of Romantic-era music.
Background and Context
Before diving into the harmonic analysis, let's set the stage with some background information. Schubert composed his Op. 90 impromptus in 1827, during a particularly productive period in his life. These pieces were intended for solo piano, and their title, "Impromptu," was chosen by the publisher, rather than Schubert himself. The impromptus are characterized by their poetic, expressive nature and technical challenges, making them a staple of the piano repertoire.
Structure and Form
Impromptu Op. 90, No. 2, is written in the key of A-flat major, with a tempo marking of "Allegretto." The piece follows a modified sonata form, comprising an exposition, development, and recapitulation. The structure can be outlined as follows:
Harmonic Analysis
Let's begin our harmonic analysis by examining the opening measures of the exposition.
Exposition (mm. 1-24)
The piece begins with a gentle, lilting melody in A-flat major, accompanied by a soothing arpeggio pattern. The chord progression is straightforward, moving from I (A-flat major) to IV (D-flat major) and then to V (E-flat major). However, Schubert quickly introduces a subtle harmonic nuance: the use of a Neapolitan chord (bII) in measure 5. This chord, E-flat minor, creates a sense of tension, which is later released when the progression resolves to V.
The exposition continues with a series of elegant, waltz-like passages, featuring chord progressions that expand on the tonic-dominant relationship. Schubert uses secondary dominants and appoggiaturas to add color and depth to the harmony. For example, in measure 13, a V7/IV chord (E-flat major 7th with a D-flat in the bass) leads to a beautiful IV chord, creating a sense of surprise and contrast.
Development (mm. 25-48)
The development section marks a significant shift in the harmonic landscape. Schubert modulates to F minor, introducing a darker, more contemplative mood. The chord progression becomes more complex, featuring a series of suspensions, appoggiaturas, and Neapolitan chords. A particularly striking moment occurs in measure 33, where a German sixth chord (D-flat, F, A-flat, B) leads to a V chord in E-flat major. This progression creates a thrilling sense of harmonic uncertainty.
Recapitulation (mm. 49-72)
The recapitulation returns to the home key of A-flat major, with a restatement of the opening theme. However, Schubert adds a few harmonic twists to keep the listener engaged. For example, in measure 57, a V9 chord (E-flat major 9th) with a sharp 9th (F#) creates a subtle sense of dissonance, which is later resolved.
Innovative Harmonic Techniques
Throughout Impromptu Op. 90, No. 2, Schubert showcases his mastery of innovative harmonic techniques. Some notable examples include:
Conclusion
Schubert's Impromptu Op. 90, No. 2, is a masterpiece of harmonic ingenuity, showcasing the composer's exceptional skill in crafting innovative chord progressions and modulations. Through our harmonic analysis, we've uncovered a rich web of relationships between chords, keys, and themes, which underpin the piece's beauty and emotional impact. schubert impromptu op 90 no 2 harmonic analysis
This impromptu continues to inspire pianists, composers, and music theorists alike, offering a glimpse into Schubert's creative genius and his profound understanding of harmony. As we continue to explore and analyze this piece, we may uncover even more secrets hidden within its intricate harmonic structure.
References:
Further Analysis and Exploration
For those interested in delving deeper into the harmonic analysis of Impromptu Op. 90, No. 2, here are some potential avenues for further exploration:
By continuing to explore and analyze this piece, we can gain a deeper understanding of Schubert's harmonic genius and the enduring appeal of his music.
Franz Schubert’s Impromptu Op. 90, No. 2 in E-flat Major is a masterclass in perpetual motion and harmonic fluidness. Published in 1827, just a year before his death, it exemplifies Schubert’s unique ability to blend Classical structures with the burgeoning expressive freedom of the Romantic era.
While the piece appears to be a light, bravura study in scales, a deep harmonic analysis reveals a sophisticated exploration of tonal relationships, particularly the tension between E-flat major and its parallel minor, E-flat minor. Structural Overview
The piece follows a Ternary (A-B-A) form with a substantial Coda. Section A: E-flat Major (perpetual motion triplet scales). Section B: B-minor (the dramatic "Trio" section). Section A': Return to E-flat Major. Coda: E-flat Minor (a tragic reversal of the opening). Section A: The Fluidity of E-flat Major
The "A" section is built on a non-stop stream of triplets. Harmonically, it is less about complex chords and more about tonal grounding.
The Diatonic Foundation: Schubert begins with a simple I - V7 - I progression in E-flat major. However, he quickly introduces chromatic passing tones within the scales to blur the lines of the key.
The Shift to G-flat Major: A hallmark of Schubert’s style is "modal mixture." Early in the first section, he pivots briefly to G-flat major (the bIII). This creates a momentary "shimmer" before returning to the home key, signaling that the piece isn't as harmonically stable as it first seems. Section B: The B-Minor Shift (The Enharmonic Pivot)
The most striking harmonic event is the transition to the "B" section. Schubert moves from the bright E-flat major to a dark, driving B minor.
The Relationship: On paper, E-flat major and B minor are distantly related. However, Schubert treats them as enharmonic neighbors. He uses G-flat (the 3rd of E-flat minor) as a pivot to F-sharp, which becomes the dominant (V) of B minor.
The Character: This section utilizes heavy accents and syncopation. The harmony moves through a series of Secondary Dominants, pushing the tension until it reaches a climax that eventually winds back down to the E-flat major scales of the "A" section. The Coda: The Final Transformation
Perhaps the most famous aspect of this Impromptu’s harmonic analysis is the ending. Rather than concluding in the triumphant E-flat major, Schubert shifts the entire theme into E-flat minor.
The Tragic Turn: The triplet scales return, but they are now shadowed by the flattened 3rd (G-flat), 6th (C-flat), and 7th (D-flat).
Finality: The piece ends with a forceful E-flat minor cadence. This harmonic choice transforms the "impromptu" from a lighthearted exercise into a serious, almost desperate work of art. Key Takeaways for Analysis
Modal Mixture: The frequent interplay between major and minor modes.
Enharmonicism: Using the pivot between G-flat and F-sharp to bridge distant keys.
Tertian Relationships: Schubert’s preference for moving keys by thirds (E-flat to G-flat or B/C-flat) rather than the traditional circle of fifths.
Harmonic Analysis of Schubert’s Impromptu in E-flat Major, Op. 90, No. 2 Franz Schubert’s Impromptu in E-flat Major, Op. 90, No. 2
(D. 899) is a staple of the Romantic piano repertoire, renowned for its "moto perpetuo" triplet scales and dramatic tonal shifts. While it begins with a light, shimmering character, a harmonic analysis reveals a darker undercurrent that eventually consumes the piece, leading to a tragic conclusion in the parallel minor key. Structural Overview The piece follows a compound ternary (A–B–A) form with a distinct Section A (E-flat Major): Characterized by rapid, scale-based triplet passages. Section B (B Minor/Trio):
A starkly contrasting "bohemian waltz" marked by heavy accents and wide-spaced octaves. Section A' (Return to E-flat Major): A restatement of the opening material. Coda (E-flat Minor): The A section is a flowing stream of
A final, accelerating section that shifts permanently into the minor mode. Harmonic Progression and Key Relationships The Ambiguity of Section A Although ostensibly in E-flat Major , Section A frequently veers into the parallel minor ( E-flat Minor
). The harmonic rhythm is relatively slow, often tethered by a repetitive bass line that grounds the swirling right-hand triplets. A key transitional moment occurs as the music moves through a sequence of secondary dominants to reach a climax, followed by a shift to pianissimo in E-flat minor. The Remote Trio (Section B)
The Trio section is notable for its distant harmonic relationship, modulating from E-flat to
(the enharmonic equivalent of C-flat minor). This section consists of five four-bar phrases that establish B minor before modulating to F-sharp minor Key Modulations: The transition to F-sharp minor is achieved through a chord of V (G# diminished 7th). Counterpoint:
Schubert employs passing tones and neighbor tones (e.g., F#–G–F#) within the inner voices to add melodic interest to the block chords. The Coda: Final Resolution to Minor
Franz Schubert’s Impromptu Op. 90 No. 2 in E-flat Major (D. 899) is a staple of early Romantic piano literature, characterized by its perpetual triplet motion and dramatic shifts between major and minor modes. Formal Structure
The piece is typically analyzed in Compound Ternary Form (A–B–A’), with a distinct coda:
Section A (mm. 1–82): Built in a nested ternary form (a–b–a).
a (mm. 1–25): Establishing the home key of E-flat Major with scale-based triplets.
b (mm. 26–51): Moves to E-flat Minor, introducing a darker, more lyrical tone.
a' (mm. 52–82): Returns to the home key before transitioning to the Trio.
Section B / Trio (mm. 83–158): Set in B Minor, this section contrasts the flowing triplets with a "rough, bohemian waltz" feel, featuring off-beat accents.
Section A’ (mm. 159–242): A varied return of the initial E-flat Major section.
Coda (mm. 243–end): Reasserts themes from the Trio but, unusually for a piece starting in a major key, concludes forcefully in E-flat Minor. Harmonic Analysis
The harmonic language is defined by Schubert's signature use of chromaticism and modal mixture. Key Areas and Modulations
The Tonic (E-flat Major): The opening establishes E-flat Major, though often with a chromatic "serpentine" scale that suggests restlessness.
The Trio (B Minor / Enharmonic C-flat): The shift to B Minor (m. 83) is harmonically striking. It is prepared as C-flat Major but enharmonically transformed to B Minor for ease of reading. This section modulates frequently, specifically moving from B Minor to its dominant, F-sharp Minor (mm. 98–102).
Neapolitan Relations: Significant dramatic climaxes (e.g., mm. 114–115) utilize Neapolitan cadences, emphasizing the tragic weight of the minor key. Significant Chord Progressions
Establishment of Key: The Trio uses clear harmonic cycles to anchor the new tonality, such as the i–bII6–V#–i progression in F-sharp minor.
Harmonic Ambivalence: Schubert frequently uses rapid interchanges between major and minor versions of the same motive, creating a sense of "poetic tension".
The Final Cadence: The piece ends with a descent into E-flat Minor, finalized by two forceful chords, rejecting the "happy ending" expected of the opening E-flat Major key. Thematic & Rhythmic Analysis
Triple vs. Duple: While the A section is dominated by triplets, the Trio introduces a waltz-like rhythm where the triplet often falls on beat two, adding a "stamping" accent.
Etude-like Texture: The A section functions similarly to an etude, requiring great wrist flexibility for the continuous scalic figures. AI responses may include mistakes. Learn more Schubert's Impromptu Op. 90 No. 2 Analysis | PDF - Scribd The First Large-Scale Shift (Measures 8–20):
Franz Schubert's Impromptu Op. 90 No. 2 in E-flat Major is a masterclass in early Romantic formal and harmonic tension, famously starting in a bright major key and ending in a tragic minor key. 1. Formal Structure
The piece follows a clear ternary form (A–B–A’) with an extensive coda.
A Section (mm. 1–82): Characterized by swirling, etude-like triplets in the right hand.
B Section / Trio (mm. 83–168): A "bohemian waltz" in B minor (the enharmonic flat-sixth of the original key, or
A’ Section (mm. 169–250): A return of the E-flat Major triplets.
Coda (mm. 251–end): A high-energy accelerando that shifts the tonality permanently to E-flat Minor. 2. Harmonic Highlights Traversing Schubert's Opus 90 Impromptus
Schubert's Impromptu Op. 90 No. 2 in E-flat Major is a perpetuum mobile
characterized by its continuous triplet rhythms and a dramatic shift from a bright major opening to a tragic minor conclusion. Structural Overview The piece follows a Ternary (ABA) form with a significant Coda: Section A (mm. 1–82): E-flat Major. Section B (mm. 83–158):
B minor (often analyzed as an enharmonic shift from C-flat minor). Section A' (mm. 159–250): Return to E-flat Major. Coda (mm. 251–end): E-flat Minor. WordPress.com Harmonic Analysis by Section Section A: E-flat Major Main Subject:
Features a classical 4+4 phrase structure. The right hand performs rapid scalar passages over a relatively simple, repetitive bass line that provides a firm harmonic anchor. Key Transitions: Early in this section, there is a poignant transition from E-flat Major to the parallel E-flat minor , marked by a shift to pianissimo Chromaticism:
Includes sequences of secondary dominants that build toward melodic climaxes. Features emphatic German augmented sixth chords
(notably at mm. 76 and 81) just before the transition to Section B. The Cross-Eyed Pianist Section B: B Minor (The "Trio")
This piece is a study in harmonic deception. While written in E-flat major, it immediately subverts the tonic and uses a relentless triplet motor to create a sense of flowing, anxious energy rather than stable repose.
Here, Schubert fully embraces the parallel minor.
The opening melody is famous for its harmonic ambiguity. While the key signature is E-flat Major (3 flats), the music vacillates constantly between major and minor.
| Bar Range | Key | Function | Analysis | |-----------|-----|----------|----------| | 70–72 | B major | Dominant preparation | B – E is V – I in E major | | 73–80 | E major | Tonic | Hymn-like chords: I – IV – V⁷ – I | | 81–88 | C-sharp minor | Relative minor of E major | vi – ii⁷ – V⁷/vi – vi | | 89–96 | A major | Subdominant of E | Secondary dominant: V⁷/IV (B⁷) to IV (A) | | 97–104 | F-sharp minor | Chromatic mediant of A | Deceptive motion via Ger⁺⁶ (F# – A# – C# – D#) | | 105–117 | E major | Tonic return with coda in E | Final cadence: IV – I⁶/₄ – V⁷ – I |
The piece begins innocently enough in E-flat major. The left hand establishes a simple I-V-I pattern (E-flat major – B-flat major – E-flat major). The right hand’s theme (a rising arpeggio from G to C) is pure diatonic comfort.
Bar 9 – The First Wrinkle: Just as we settle, Schubert introduces a German Augmented 6th chord (often spelled Fr+6 in German theory, but functionally an Augmented 6th resolving to V). In bar 9, beat 3, we get an A-flat, C, E-flat, F-sharp. This chord yearns desperately for the dominant (B-flat). It resolves beautifully in bar 10, but the damage is done: we now know this piece will not be harmonically static.
The Transition (Bars 15-20): Schubert modulates from E-flat major to its dominant, B-flat major, via a standard pivot chord (E-flat acting as IV in B-flat). This is classical procedure. But the second theme (bar 21) is where things get strange.
The False Major (Bar 21): The new theme arrives in B-flat major – except it isn’t happy. The melody uses the flattened 7th (A-flat), hinting at the mixolydian mode. Harmonically, Schubert immediately tonicizes G minor (the relative minor of B-flat) via a G minor harmony in bar 23. We are drifting.
The Chromatic Descent (Bars 36-44): This is the most astonishing moment in Section A. The right hand plays a descending chromatic scale, but Schubert harmonizes it with a chain of diminished seventh chords. He cycles through:
This is pure harmonic color for its own sake. The listener feels unmoored. Finally, a F minor 7 chord (bar 42) pivots us back to the dominant of E-flat (B-flat major) for the return of the opening idea. The effect is like waking from a dream within a dream.
Schubert establishes the tonic not with a solid chord, but through a flowing accompaniment that hints at the minor mode immediately.
| Technique | Example in Op. 90 No. 2 | |-----------|--------------------------| | Chromatic Mediant | E-flat major → E major (B section) | | Enharmonic Reinterpretation | C-flat major chord (bar 61) heard as B major (dominant of E) | | German Augmented 6th | Bar 18: A-flat – C – E-flat – F# resolves to G (V of F minor) | | Common-Tone Diminished 7th | Bar 36: C°⁷ (C – Eb – Gb – A) resolves to E-flat major chord | | Neapolitan as Structural Pivot | F-flat major in coda (enharmonic to E major from Trio) | | Deceptive Cadence (V – bVI) | B-flat⁷ (V of E-flat) to C-flat major (bar 61) |