Piano Sonata in C sharp minor, op. 80

Russian composer Pyotr Ilyich Tchaikovsky wrote his Piano Sonata in C♯ minor in 1865, his last year as a student at the St Petersburg Conservatory. The four-movement work was not published during the composer's lifetime, but Tchaikovsky did transpose, adapt and orchestrate its third movement to create the scherzo of his Symphony No. 1 in G minor, Op. 13.