Violin Sonata No. 9 (Beethoven)

47, by Ludwig van Beethoven, is an 1803 sonata for piano and violin notable for its technical difficulty, unusual length (around 40 minutes), and emotional scope.

In the composer's 1803 sketchbook, the work was titled "Sonata per il Pianoforte ed uno violino obligato in uno stile molto concertante come d’un concerto" ("Sonata for the piano and one obligatory violin in a highly concertante style like a concerto").

Although the work is usually titled as being in A major, the Austrian composer and music theoretician Gerhard Präsent has published articles indicating that the main key is in fact A minor.

Shortly after completion the work was premiered by Bridgetower and Beethoven on 24 May 1803 at the Augarten Theatre at a concert that started at the unusually early hour of 8:00 am.

[4] The piece is in three movements, and takes approximately 43 minutes to perform: After its successful premiere in 1803, the work was published in 1805 as Beethoven's Op.