What has the author PETER CORNELIUS written?

Peter Cornelius was a 19th-century German composer and poet, not an author. He is known for his contributions to the musical world, including:

1. Operas:

- "Der Barbier von Bagdad" (1858)

- "Gunlöd" (1874)

2. Orchestral Works:

- Symphony in G minor, Op. 5 (1852)

- Sinfonietta in A, Op. 10 (1854)

- "Overture to a Tragedy," Op. 12 (1856)

3. Chamber Music:

- String Quartet in D minor (1853)

- Piano Trio in A major, Op. 11 (1854)

4. Songs and Lieder:

- Cornelius wrote numerous songs and Lieder, including "Wehmut," "Trauerweide," and "Auf einer Wanderung."

5. Choral Works:

- "Die Auferstehung" (1873), an oratorio.

6. Theoretical Writings:

- "Die Lehre von der musikalischen Form" (1859), a treatise on music theory.