Beethoven in 1804, / Detail of a portrait by W. J. Mähler
Beethoven’s odd numbered symphonies have the reputation of being stormy and dramatic, while the even numbered symphonies seem more gentle and easy-going. For that reason, perhaps, the even numbered ones are less popular. Symphony no. 6, Pastoral, is easily the best known and most performed of the even numbered symphonies.
Beethoven worked on his Fourth, Fifth, and Sixth symphonies, among other major works, between 1806 and 1808. The latter two are the first of Beethoven’s symphonies with trombone parts.
Many symphonies and chamber works are known by nicknames that, more often than not, the composer never thought of. Beethoven himself supplied names for the Third Symphony (Eroica) and the Sixth (Pastoral Symphony, or Recollections of Country Life).
Plenty of people have composed music as a hobby, but none more successfully than Alexander Borodin, a chemist by profession. As a hobbyist, he did not produce a lot of music, but his works include symphonies, chamber music, and an opera—some of the loveliest music in the repertoire. The opera, Prince Igor, includes the ever-popular “Polovtsian Dances,” which formed the tune of the Broadway hit “Stranger in Paradise.” Its success is remarkable, because he never finished the opera. 
