Ferdinand Ries Ferdinand Ries (28 November 1784 (baptised) – 13 January 1838) was a German composer. Ries was a friend, pupil and secretary of Ludwig van Beethoven. He composed eight symphonies, a violin concerto, eight piano concertos and numerous other works in many genres, including 26 string quartets. String Quartet in E-Flat Major, WoO 10: IV. Rondeau. Allegro moderato ..