but never scheduled a public performance of it. The reasons continue to be unknown, although the difficulty of the symphony is the possible explanation. In the last weeks of his life, he began to sketch three movements for a new Symphony in D major (D 936A); In this work, he anticipates Mahler's use of folksong-like harmonics and bare soundscapes. Schubert expressed the wish, were he to survive his final illness, to further develop his knowledge of harmony and counterpoint, and had actually made appointments for lessons with the counterpoint master Simon Sechter. On 26 March 1828, the anniversary of Beethoven's death, Schubert gave, for the only time in his career, a public concert of his own works. The concert was a success popularly and financially, even though it would be overshadowed by Niccolò Paganini's first appearances in Vienna shortly after. Final illness and death In the midst of this creative activity, his health deteriorated. By the late 1820s, Schubert's health was failing and he confided to some friends that he feared that he was near death. In the late summer of 1828, he saw the physician Ernst Rinna, who may have confirmed Schubert's suspicions that he was ill beyond cure and likely to die soon. Some of his symptoms matched those of mercury poisoning (mercury was then a common treatment for syphilis, again suggesting that Schubert suffered from it). At the beginning of November, he again fell ill, experiencing headaches, fever, swollen joints, and vomiting. He was generally unable to retain solid food and his condition worsened. Five days before Schubert's death, his friend the violinist Karl Holz and his string quartet visited to play for him. The last musical work he had wished to hear was Beethoven's String Quartet No. 14 in C-sharp minor, Op. 131; Holz commented: "The King of Harmony has sent the King of Song a friendly bidding to the crossing". Schubert died in Vienna, aged 31, on 19 November 1828, at the apartment of his brother Ferdinand. The cause of his death was officially diagnosed as typhoid fever, though other theories have been proposed, including the tertiary stage of syphilis. Although there are accounts by his friends that indirectly imply that he was syphilitic, the symptoms of his final illness do not correspond with tertiary syphilis. Six weeks before his death, he walked 42 miles in three days, ruling out musculoskeletal syphilis. In the month