Some Chamber selections:
Arcangelo Corelli (1653-1713) Sonata for Violin La Folia - Unknown composition date.
Jean-Joseph Mouret (1682-1738) Suite de Symphonies - 1st movement - Fanfare-Rondo - Composed - 1737 - 2 points for the first person who can identify this piece with a particular television program.
Luigi Boccherini (1743-1805) String Quintet in E major, Opus 11, No. 5 - Minuet - Unknown composition date.
Wolfgang Amadeus Mozart (1756-1791) String Quartet No. 15 in D minor, K 421/417b - 1st movement - Allegro - Composed - 1783
Frédéric Chopin (1810-1849) Polonaise Brilliante for Cello and Piano in C major, Opus 3 - Composed - 1830 (The recording linked above is with Mstislav Rostropovich and Martha Argerich, which is quite good. However, the recording available here with Yo Yo Ma on Cello and Emmanuel Ax on Piano is simply magnificent. I recommend it.) This is one of my favorite Romantic era pieces.
César Franck (1822-1890) Sonata in A major for Violin and Piano, M 8 - 4th movement - Allegretto poco mosso - Composed - 1886
Jean Sibelius (1865-1957) Romance for Violin and Piano, Opus 78, No. 2 - Unknown date of composition.
Dmitri Shostakovich (1906-1975) String Quartet No. 3 in F major, Opus 73 - 3rd movement - Allegro non troppo. Composed - 1946.