The Seventh Symphony in C Major, the Mass in E-flat Major, the String Quintet in C major, his last three piano sonatas, and his last and greatest collection of songs, Schwanengesang (Swan Song), was written in 1828. Schubert died on November 19, 1828, of typhoid fever.

Evaluation
Schubert's early instrumental works, which follow the patterns used by Wolfgang Amadeus Mozart and Joseph Haydn, are marked as romantic by a new sonority and a harmonic and melodic richness. In his early piano sonatas, Schubert worked to free himself from the influence of Ludwig van Beethoven. Although he cast his symphonies and sonatas in classical outlines, in their development sections these works rarely achieve the dramatic tension that is the core of the classical sonata form; instead they tend to emphasize expansive melody and evocative harmonies.
Schubert's instrumental works show development over a long period of time, but some of his greatest songs were composed before he was 20 years old. In Schubert's songs the literary and musical elements are perfectly balanced, composed on the same intellectual and emotional level. Although Schubert composed strophic songs throughout his career, he did not follow set patterns but exploited bold and free forms when the text demanded it. His reputation as the father of German lieder (“art songs”) rests on a body of more than 600 songs.