|(My LvB bust comes in real handy for times like this where I can't find a good post header image ;) )|
"Duo for Violin and Cello (Es-dur) WoO.32 (1797) 'Duo w 2 Obbligato Eyeglasses'"
Movement 1 - Allegro
Sadly I couldn't find a Youtube performance of the Allegretto 2nd movement...
Beethoven did not really write too many string duos but there is this string duo arrangement of the "Duo for Clarinet and Bassoon No.1 in C Major WoO.27(1815). However there is some question as to its authenticity. Ah heck, it's still fun to hear on a lazy Sunday...
Movement II and III (at 2:25)
And then there's this short 7-bar "napkin" composition:
Duo fur 2 Violins (A-dur) WoO.34 (1822)
Boucher asked Beethoven for a lock of his hair and for a short composition for violin. Beethoven complied with both requests, the latter one resulting in this slight work in A major. Composed in just a few moments, it is not a piece of great consequence. It consists of a mere seven measures and, not surprisingly, is a fairly simple, straightforward piece of no particular melodic distinction. The work was obviously written as a memento, Beethoven never intending that such a creation should find its way to a publisher's desk. Nevertheless, the duet was published posthumously (Berlin, 1901). ~ Robert Cummings, Rovi