http://programnotes.wikia.com/wiki/Sonata_No._9_(op._47),_%22Kreutzer%22
According to the original title page, this sonata for violin and piano is "in a style molto concertante almost like that of a concerto". It was both completed and premiered in 1803 while Beethoven was in Vienna. Though the composer had completed the finale approximately three years earlier, the first and second movements were ready only moments before the first performance of this work, and the featured violinist was forced to play them at sight. Additionally, the piano part remained practically blank at the premiere, but with the composer himself performing, one did not need written notes. For a brief time, the sonata was known as the Bridgetower Sonata, dedicated to the violinist who premiered the work. However, a quarrel between Beethoven and Bridgetower encouraged the composer to re-dedicate the work to Rudolphe Kreutzer instead, a Parisian virtuoso violinist whom Beethoven had heard perform in Vienna. Ironically, Kreutzer himself never performed the work, especially after a broken arm later compelled Kreutzer to give up violin playing.
http://www.classicalnotes.net/classics2/kreutzer.html
In contrast to all eight of his previous violin sonatas that began with the piano抯 plain statement of the melody, key and tempo, here the soloist wanders out naked and lost. The tempo indication, adagio sostenuto, barely stirs and the score presents an immediate challenge – how the violinist, able to sound only two strings at once, is to sustain the static opening figures of three- and four-note chords without disrupting their tense continuity. Upon the piano抯 sudden entrance, the key shifts abruptly from A major to a minor, from which it never recovers. Conventional wisdom is that Beethoven, a concert pianist, wrote a dominant role for his own instrument, but that抯 not really true – he was also an accomplished violinist and in any event had to provide display opportunities for guest artists at his concerts. Indeed, the key to writing duo-sonatas is to find themes that exploit the distinctive expressive character of both instruments, while suggesting a wide range of possibilities for accompaniment. Here, the relationship between violin and piano is complex – they both blend and chafe, suggesting a common purpose, yet plunging into frenzied competition as the piece erupts into an astoundingly stormy movement, which Beethoven aptly described on his score as 搎uasi come d抲n concerto?/i> (揳lmost like a concerto? that heaves between gentle respite and exhausting, violent attacks of furious slashing figures at a delirious pace (labeled 損resto?/i> and generally taken anywhere between 300 to 500 beats per minute).
Tolstoy pronounced the second movement 揷ommon and unoriginal?and the finale 搗ery weak.? That抯 a bit harsh, yet sensible – nothing really could top the scope and fervency of the first. Beethoven meets the challenge brilliantly but subtly, while again disrupting our expectations for a worthy successor to the opening frenzy, this time with a genial andante, a throwback that would fit in any of his prior works, comprising a placid theme with four variations of escalating complexity – first with piano figuration, then the violin elaborates, next a plunge into f-minor, and finally ornate combinations. It抯 as if, having depicted his rebellious angst, Beethoven assures us that his inner soul remains loving and steeped in common values and that he knows how to fulfil social expectations.