information:classification, linguistic:paraphrasing
1830s

Later in 1830 Schumann published his Op. 1, a set of piano variations on a theme based on the name of its supposed dedicatee, Countess Pauline von Abegg (who was almost certainly a product of Schumann's imagination). The notes A-B-E-G-G, played in waltz tempo, make up the theme on which the variations are based. The use of a musical cryptogram became a recurrent characteristic of Schumann's later music. In 1831 he began lessons in harmony and counterpoint with Heinrich Dorn, musical director of the Saxon court theatre, and in 1832 he published his Op. 2, Papillons (Butterflies) for piano, a programmatic piece depicting twin brothers – one a poetic dreamer, the other a worldly realist – both in love with the same woman at a masked ball. Schumann had by now come to regard himself as having two distinct sides to his personality and art: he dubbed his introspective, pensive self "Eusebius" and the impetuous and dynamic alter ego "Florestan". Reviewing an early work of Chopin in 1831 he wrote:

Schumann's pianistic ambitions were ended by a growing paralysis in at least one finger of his right hand. The early symptoms had come while he was still a student at Heidelberg, and the cause is uncertain. He tried all the treatments then in vogue including allopathy, homeopathy, and electric therapy, but without success. The condition had the advantage of exempting him from compulsory military service – he could not fire a rifle – but by 1832 he recognised that a career as a virtuoso pianist was impossible and he shifted his main focus to composition. He completed further sets of small piano pieces and the first movement of a symphony (it was too thinly orchestrated according to Wieck and was never completed). An additional activity was journalism. From March 1834, along with Wieck and others, he was on the editorial board of a new music magazine, Neue Leipziger Zeitschrift für Musik (New Leipzig Music Magazine), which was reconstituted under his sole editorship in January 1835 as the Neue Zeitschrift für Musik. Hall writes that it took "a thoughtful and progressive line on the new music of the day". Among the contributors were friends and colleagues of Schumann, writing under pen names: he included them in his Davidsbündler (League of David) – a band of fighters for musical truth, named after the Biblical hero who fought against the Philistines – a product of the composer's imagination in which, blurring the boundaries of imagination and reality, he included his musical friends.

During successive months in 1835 Schumann met three musicians whom he regarded with particular respect: Felix Mendelssohn, Chopin and Moscheles. Of these, he was most influenced in his compositions by Mendelssohn, although the latter's restrained classicism is reflected in Schumann's later works rather than in those of the 1830s. Early in 1835 he completed two substantial compositions: Carnaval, Op. 9 and the Symphonic Studies, Op.13. These works grew out of his romantic relationship with Ernestine von Fricken, a fellow pupil of Wieck. The musical themes of Carnaval derive from the name of her home town, Asch. The Symphonic Studies are based on a melody said to be by Ernestine's father, Baron von Fricken, an amateur flautist. Schumann and Ernestine became secretly engaged, but in the view of the musical scholar Joan Chissell, during 1835 Schumann gradually found that Ernestine's personality was not as interesting to him as he first thought, and this, together with his discovery that she was an illegitimate, impecunious, adopted daughter of Fricken, brought the affair to a gradual end. According to the biographer Alan Walker, Ernestine may have been less than frank with Schumann about her background and he was hurt when he learnt the truth.

Schumann felt a growing attraction to Wieck's daughter, the sixteen-year-old Clara. She was her father's star pupil, a piano virtuoso emotionally mature beyond her years, with a developing reputation. According to Chissell, her concerto debut at the Leipzig Gewandhaus on 9 November 1835, with Mendelssohn conducting, "set the seal on all her earlier successes, and there was now no doubting that a great future lay before her as a pianist". Schumann had watched her career approvingly since she was nine, but only now fell in love with her. His feelings were reciprocated: they declared their love to each other in January 1836. Schumann expected that Wieck would welcome the proposed marriage, but he was mistaken: Wieck refused his consent, fearing that Schumann would be unable to provide for his daughter, that she would have to abandon her career, and that she would be legally required to relinquish her inheritance to her husband. It took a series of acrimonious legal actions over the next four years for Schumann to obtain a court ruling that he and Clara were free to marry without her father's consent.

Professionally the later years of the 1830s were marked by an unsuccessful attempt by Schumann to establish himself in Vienna, and a growing friendship with Mendelssohn, who was by then based in Leipzig, conducting the Gewandhaus Orchestra. During this period Schumann wrote many piano works, including Kreisleriana (1837), Davidsbündlertänze (1837), Kinderszenen (Scenes from Childhood, 1838) and Faschingsschwank aus Wien (Carnival Prank from Vienna, 1839). In 1838 Schumann visited Schubert's brother Ferdinand and discovered several manuscripts including that of the Great C major Symphony. Ferdinand allowed him to take a copy away and Schumann arranged for the work's premiere, conducted by Mendelssohn in Leipzig on 21 March 1839. In the Neue Zeitschrift für Musik Schumann wrote enthusiastically about the work and described its " himmlische Länge " – its "heavenly length" – a phrase that has become common currency in later analyses of the symphony.