Sonata in C major for piano four-hands in C major, D 812 "Grand Duo"

At the time this work was written Schubert was too ill to play piano. He complained of pain in his bones and his left arm, headaches, and lesions in his mouth and throat. In a letter to his brother Ferdinand he described his illness as "a period of fateful recognition of a miserable reality, which I endeavour to beautify as far as possible by my imagination."