Since we are in a spring kind of mood, what with tulips greeting me from so many front-yards on every street, today we listen to Beethoven's Violin Sonata No. 5, also called the "Spring" sonata (Frühlingssonate).
In this version, we have the amazing Martha Argerich on the piano & Gidon Kremer on the violin.
Beethoven Violin Sonata No.5. Movement 1
You can also listen to Movement 2 and Movement 3, via youtube... or better still buy this CD which has Beethoven's Violin Sonata No. 4 & 5.