Franz Schubert's Symphony in B minor, D. 759 (often numbered as Symphony No. 8, or 7 in accordance with the revised Deutsch catalogue and the Neue Schubert-Ausgabe), commonly known as the Unfinished Symphony (German: Unvollendete), is a musical composition that Schubert started in 1822 but left with only two movements—though he lived for another six years. A scherzo, nearly completed in piano score but with only two pages orchestrated, also survives.
It has been theorized by some musicologists, including Brian Newbould, that Schubert may have sketched a finale that instead became the big B minor entr'acte from his incidental music to Rosamunde, but all evidence for this is circumstantial. One possible reason for Schubert's leaving the symphony incomplete is the predominance of the same meter (triple meter). The first movement is in 34, the second in 38 and the third (an incomplete scherzo) again in 34. Three consecutive movements in basically the same meter rarely occur in classical symphonies, sonatas, or chamber works.
The symphony is sometimes called the first Romantic symphony (an attribution also given to Beethoven's Eroica Symphony which premiered seventeen years earlier), due to its emphasis on the lyrical impulse within the dramatic structure of Classical sonata form. Furthermore, its orchestration is not solely tailored for functionality, but specific combinations of instrumental timbre that are prophetic of the later Romantic movement, with wide vertical spacing occurring for example at the beginning of the development.
Musicologists disagree as to why Schubert abandoned the symphony. Some have speculated that he stopped work in the middle of the scherzo in the fall of 1822 because he associated it with his initial outbreak of syphilis—or that he was distracted by the inspiration for his Wanderer Fantasy for solo piano, which occupied his time and energy immediately afterward. It could have been a combination of both factors.
In 1823, the Graz Music Society gave Schubert an honorary diploma. He felt obliged to dedicate a symphony to them in return, and sent his friend Anselm Hüttenbrenner, a leading member of the Society, an orchestral score he had written in 1822 consisting of the two completed movements of the Unfinished plus at least the first two pages of the start of a scherzo. This much is known.
What may never be known is how much of the symphony Schubert actually wrote, and how much of what he did write he gave to Hüttenbrenner. The following exists:
The first two movements, complete in full score
The first two pages of a scherzo in full score
The rest of the scherzo (except for the missing second strain of the trio) exists in a separate manuscript in short score (not sent to Hüttenbrenner, but found among Schubert's copious manuscripts after his death and carefully preserved by his devoted schoolteacher brother Ferdinand), along with a complete short score of the second movement and the end of the first movement, but nothing of any fourth movement. A fourth movement finale in the home key (B minor) would have been the norm for any symphony written at that time, but there is no direct evidence that Schubert ever started work on it. It has, however, been surmised that the most extended entr'acte from Rosamunde (also in B minor, in the same style of the first movement and with the same instrumentation as the symphony) was indeed that fourth movement, which Schubert recycled by inserting it into his Rosamunde incidental music composed in early 1823 just after the Wanderer Fantasy.
The Schubert scholar Brian Newbould, who harmonized, orchestrated and conjecturally completed the piano sketch of the scherzo, believed this to be true; but not all scholars agree. Pages appear to have been torn out after the beginning of the scherzo in the full score sent to Hüttenbrenner, in any event. That Hüttenbrenner neither had the work performed, nor even let the society know he had the manuscript, is curious and has spawned various theories.
Old age and approaching death seem to have influenced Hüttenbrenner to reveal the work to an important and gracious visitor at long last (in 1865, when he was 71 and had only three more years to live). This was the conductor Johann von Herbeck, who premiered the extant two movements on 17 December 1865 in Vienna with the Gesellschaft der Musikfreunde, adding the busy but expressively lightweight perpetual-motion last movement of Schubert's 3rd Symphony in D major, as a finale. The performance was received with great enthusiasm by the audience. The score of those two movements was not published before 1867.
The Unfinished Symphony has been called No. 7 (recently, for example, in the New Schubert Edition) instead of No. 8 as it usually is in the traditional English system, since the other work, in E major, completed by Felix Weingartner, sometimes referred to as Schubert's 7th was also left incomplete but in a different way, with at least fragments of all four of its movements in Schubert's hand.
The two complete movements (scored for 2 flutes, 2 oboes, 2 clarinets, 2 bassoons, 2 horns, 2 trumpets, 3 trombones, timpani and strings), which are all of the symphony as it is performed in the concert repertoire, are:
The first movement, in B minor, opens in sonata form, softly in the strings, followed by a theme shared by the solo oboe and clarinet. A typically laconic Schubertian transition consists of just four measures for the two horns, effectively modulating to G major (measures 38–41).
The second subject begins with a celebrated lyrical melody in that key, stated first by the cellos and then by the violins (sometimes drolly sung to Sigmund Spaeth's words as "This is ... the sym-phoneee ... that Schubert wrote but never fin-ished") to a gentle syncopated accompaniment. This is interrupted by a dramatic closing group alternating heavy tutti sforzandi interspersed with pauses and developmental variants of the G major melody, ending the exposition.
Opening melody (celli and basses)
First theme (oboe and clarinet)
An important moment in the first movement occurs in measure 109 (and repeats in the recapitulation in measure 327). In these measures, Schubert holds a tonic B pedal in the second bassoon and first horn under the dominant F♯ chord, that evokes the end of the development in Beethoven's Eroica Symphony.