The Piano Sonata No. 1 in C minor, Op. 4 was written by Frédéric Chopin in 1828. It was written during Chopin's time as a student with Józef Elsner, to whom the sonata is dedicated. Despite having a low opus number, the sonata was not published until 1851 by Tobias Haslinger in Vienna, two years after Chopin's death. This sonata has been highly underestimated, in terms both of musical difficulty and quality. Of Chopin's works, this is among the least recorded.
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