Sonata in C minor, D. 958 I. Allegro The opening is dramatic, with a fully voiced,
forte C-minor chord. The
voice leading of this passage outlines a chromatic ascent to A – this will be the first instance of a remarkable degree of
chromaticism in the sonata as a whole. The most salient feature of the first theme is the sudden
modulatory digression to A major, established by a rushing downward scale initiated by the final achievement of this key in the ascending voice of the minor theme. The exposition shifts from the
tonic to the relative major (E major), touching midway upon its
parallel minor (E minor), all in accordance with Classical practice. This second theme, a hymn-like E major melody in
four-part harmony, greatly contrasts with the first, though its melodic contour is prefigured in the sudden A major departure. Both themes progress somewhat in the style of variations and are structured with irregular phrase lengths. The development section is highly chromatic and is texturally and melodically distinct from the exposition. The recapitulation is once again traditional, staying in the tonic and stressing
subdominant tonalities (D, the lowered second degree – in the first theme). The coda returns to the material of the development section but with stable tonality, dying out in a dark series of
cadences in low register.
II. Adagio The second movement is in A major, ABABA form. Nostalgic in its traditional Classical character (one of the few instrumental Adagios Schubert wrote), the opening theme of this movement is an elegant, touching melody that eventually undergoes remarkable tonal and cadential treatment, undermining the peaceful setting. Charles Fisk has pointed out that the voice leading of the first phrase, 1–7–1–2–3–4–3, is based on the initial A digression in the beginning of the Allegro. The unorthodox, chromatic harmonic structure of this movement is generated from a short
progression that appears towards the end of the A section, Despite this traditional approach, both exposition themes are built in an innovative ternary form, and in each resulting 'B' section a highly chromatic development-like section based on the exposition's second phrase modulates through the
circle of fourths, only to return to the tonic. This novel structure creates a sense of harmonic movement without actually committing to a thematic modulation, and is one of the techniques Schubert uses to achieve a sense of scale in the movement. The development proper is based on a scalar variation of the second theme heard at the end of the exposition. Here, in contrast to the striking modulatory excursions nested in the exposition, the tonal plan is static, shifting constantly between C major and B major (later B minor). After the development theme is finally stated in the tonic minor, the dramatic
retransition has the unconventional role of only shifting to the major mode to prepare the recapitulation, rather than fully preparing the tonic key (which in this case has already been established). The recapitulation is traditional – staying in the tonic, and emphasizing the tonic minor and the flat submediant (F major) as subdominant tonalities. The coda restates the first theme, this time in a much more 'hesitant' manner,
pianissimo and with further allusions to subdominant tonalities. The movement ends with serene arpeggios; however, for the penultimate chord, Schubert chose a striking
Italian sixth on II, instead of the more usual
dominant or
diminished seventh chords. This choice is not arbitrary – it is a final statement of the chromatically based ascending minor second motive that pervaded the movement, a motive that will be reversed into a descending minor second in the following movement.
II. Andantino The second movement is in F minor, in ABA form. The A section presents a sparse, lamenting, poignant melody, full of sighing gestures (portrayed by descending seconds). This theme, despite its vastly different character, references the opening bars of the Allegro, an aforementioned source of much of the sonata's material – the Andantino's first measure shares with the
fanfare a second-beat
bass note 'echo' after the downbeat on A, creating an audible rhythmic affinity; additionally, the quiet close of the A theme features the fanfare's characteristic pattern of stepwise thirds in the middle voices enclosed between tonic octaves. The middle section is of an improvisatory,
fantasia-like character, with extremely harsh modulations and sonorities, culminating in C minor with
fortissimo chords. The chromaticism, triplet emphasis, and modulatory patterns of this section are all reminiscent of the developments nested within the Allegro's exposition. After the C minor climax (according to Fisk, a key of great importance in the cycle due to its relation to "
Der Wanderer"), a
recitative section with startling
sforzando outbursts emphasizing an ascending minor second leads to a serene phrase in the major mode (C major), which in turn leads (as the dominant of F minor) back to the A section, here somewhat transformed, with new
accompanimental
figuration. The final bars of the movement feature
rolled chords that prefigure the opening of the following Scherzo.
III. Scherzo: Allegro vivace – Trio: Un poco più lento The A section of the scherzo uses a playful leaping rolled chord figure that is rhythmically and harmonically reminiscent of the opening bars of the sonata. The B section is dominated by the juxtaposition of two distant tonal realms. It commences in C major for a rollicking theme that is abruptly interrupted by a downward-rushing C minor scale without any modulatory preparation, in a striking cyclic reference to the climax of the preceding movement's middle section. Following this outburst, the B section quietly ends in C minor a grace-note melody identical in contour to a figure from the theme of the Andantino (2–1–7–1–3–1), before modulating back to the movement's tonic. C major returns in the concluding A section, this time more tonally integrated into its A-major surroundings, by modulatory sequences. The ternary form trio in D major uses hand crossing to add melodic accompaniment to the chordal theme, and is rhythmically and harmonically based on the opening of the Allegro.
IV. Rondo: Allegretto – Presto This lyrical rondo movement consists of flowing triplet movement and endless songful melody. Its form is a
sonata-rondo (A–B–A–development–A–B–A–coda). The rondo's main and opening theme is taken from the slow movement of the
sonata D. 537 of 1817. Charles Fisk has pointed out that this theme would make musical sense as a response subsequent to the questioning leading tone that closes the Allegro's opening fanfare; in this capacity the Rondo's lyricism is the dramatically delayed final goal of the sonata. that anticipates the following harmonic events – a shift to G major in the central section of the main theme, and, after a return to the tonic, an
enharmonic shift to F minor at the start of the second theme. After a colorful harmonic excursion, the third tonal area arrives in the traditional dominant key (F major). In contrast to the previous sonatas, here the development section elaborates on several different themes from the exposition. It reaches a dramatic climax in D minor, in which the first theme is presented, fluctuating between D minor and the home key, in a manner similar to the parallel passage from the previous sonata (see above). In the recapitulation, the bass line in the first theme rises to B instead of descending to F (as in the exposition), and the second theme enters in B minor, instead of F minor. The rest of the exposition is repeated without alterations,
transposed a fourth up, meaning that it returns to the home key, B, for the third tonal area. The coda once again recalls the first theme, although only fragmentarily. During the
development of this movement, starting at bar 151 in D, Schubert quotes the opening motif of the piano part of his own
lied composition "
Der Wanderer" (D 489).
II. Andante sostenuto This movement is written in
ternary form, and is in the key of C minor – "the most tonally remote inner movement in Schubert's mature instrumental works in sonata form". In the main section, a somber melody is presented over a relentless rocking rhythm in a texture swimming in pedal. The central section is written in A major and presents a choral melody over an animated accompaniment; it later touches upon B major, the sonata's home key. The main section returns with a variant of the original accompanying rhythm. This time, the tonal scheme is more unusual: after a
half cadence on the dominant, a sudden, mysterious harmonic shift introduces the remote key of C major. This eventually turns into E major, and proceeds as before. The coda shifts to the tonic major but is still haunted by glimpses of the minor mode.
III. Scherzo: Allegro vivace con delicatezza – Trio The first part of the
scherzo proper cadences not in the tonic or dominant but in the subdominant. The second, B part, continues to modulate by ascending fourths, until it reaches the key of D major. In this key, a new theme is presented, emphasizing the local subdominant (G major, a further fourth upward) – first in the major mode, then in the minor, with an enharmonic shift to F minor. This harmonic excursion eventually leads, through A major and a B
diminished triad, back to the tonic and the opening section. The trio is in
binary form and in B minor, the first presentation of the tonic minor in the sonata.
IV. Allegro ma non troppo – Presto The finale has the same structure as that of the previous sonata. Many elements of this movement imply large-scale resolution of harmonic and thematic conflicts established earlier in this and even the two previous sonatas. The main rondo theme opens with an 'empty' octave on G, which resolves to C minor, subsequently interpreted as ii in B major.
Alfred Brendel asserts that this theme, beginning in the ambiguous G/Cm, functions as a resolution of the troubling G trill presented in the very beginning of the sonata, using G to resolve to F major as dominant of B. The second theme, in ternary form, is written in the traditional key of the dominant, with a central section in D major; it consists of an extended, characteristically Schubertian stepwise melody played over an uninterrupted flow of
semiquavers. This second theme uses the same melodic
contour (5–8–7–6–6–5–(5–4–4–3)) of the remarkable C-major modulation in the final A section of the second movement, implying further connotations of conflict resolution. After an abrupt end to the second theme and a pregnant pause, a minor
dotted-rhythm chordal theme in F-minor suddenly enters
fortissimo, elaborating and modulating before sublimating into a
pianissimo version of itself in the parallel major. This third theme is highly similar in rhythm and melodic contour as well as left-hand pattern to the tarantella of the C minor sonata, which may not be a coincidence when considering the overall high level of cyclic connection between the sonatas. This theme evolves into a rhythmic segue that leads seamlessly back to the main theme of the rondo. The development section, based entirely on the rhythmic pattern of the main rondo theme, is characterised by juxtaposed eighth notes and triplets, reaching a climax on C major, from which the bass descends in chromatic modulation eventually to G in an extended
diminuendo to return to the main theme. In the coda, the main theme is fragmented in a manner also similar to the finale of the previous sonata; in a highly chromatic and unstable progression, the octave on G here descends through G to F, in an extension of the G-G-F resolution of the theme. After finally reaching this dominant preparation for the final time, the movement closes with an exceedingly triumphant and affirming presto section that totally resolves all dramatic conflicts in the sonata and the series. ==Compositional process==