DESCRIPTION:
The second (last) movement of Beethoven's violoncello sonata in G minor, performed by Tanya Tomkins, violoncello and Eric Zivian, fortepiano.
FAQ

Q: Where can I get this recording?
A: The recording is from the collection at Magnatune:
http://magnatune.com/artists/albums/tomkins-beethoven/

Q: Where can I learn more about the performers?
A: Here is their page at Magnatune:
http://magnatune.com/artists/Tomkins

Q: What do the colors mean?
A: Each pitch class (C, C-sharp, D, etc.) has its own color, according to its position on the musician's "circle of fifths." This lets you see how the harmonies and tonalities change during piece.