Ludwig van Beethoven's Piano Sonata No. 23 in F minor, Op. 57 is among the three famous piano sonatas of his middle period ; it was composed during 1804 and 1805, and perhaps 1806, and was dedicated to Count Franz von Brunswick. The first edition was published in February 1807 in Vienna.
Mae'r testun uchod ar gael o dan drwydded y CC BY-SA 3.0. Mae'n defnyddio deunydd o erthygl Wicipedia "Piano Sonata No. 23 (Beethoven)".