Beethoven was about 40 when he wrote his "Serioso" String Quartet (1810). Schumann was born the same year as the "Serioso" Quartet was composed.

Dohnanyi, Bartok = Hungarian. They had a flair, you know, for composition!

One of tonight's works is popularly known as "The Clock"  because of the "ticking" rhythm throughout the second movement.

Two hundred years. That is how long the score for the Haydn Cello Concerto #1 was 'lost'.     The score was discovered in the Prague National Museum in 1961, the work having been written (started for certain) in 1761.

Have you ever pondered the amount of time the previous 92 Haydn symphonies took to write, so, jest here, by comparison, what's another one (or more)?