The Violin Sonata No. 9, Op. 47 in A major, by Ludwig van Beethoven, is a sonata for piano and violin notable for its technical difficulty, unusual length, and emotional scope. It is commonly known as the Kreutzer Sonata after the violinist Rodolphe Kreutzer, to whom it was ultimately dedicated, but who thoroughly disliked the piece and refused to play it.
Mae'r testun uchod ar gael o dan drwydded y CC BY-SA 3.0. Mae'n defnyddio deunydd o erthygl Wicipedia "Violin Sonata No. 9 (Beethoven)".