I'm not sure what you mean by "know," but I know of all of them except for five. I like Rachmaninoff, Prokofiev, Mozart, J.S. Bach, Mendelssohn, Vivaldi, and Beethoven (I guess that's all of them). Of course, I haven't listened extensively to them all, but I like the Violin Concerto in E minor by Mendelssohn, the Winter movement of the Four Seasons (well, it's my favorite of them, anyway) by Vivaldi, Symphony No. 40 by Mozart (also my favorite), Symphony No.2 by Rachmaninoff, Sonata for violin and piano, No. 1 in F minor by Prokofiev, Bach's inventions as well as the Brandenburg Concertos and the Toccata and Fugue in D minor for organ (of course

), and Beethoven's "hits" (Symphonies No. 5 and 7, and Moonlight Sonata). I've heard some stuff by Handel and Haydn that I've liked, but I can't remember them. Also, I've been told to check out Brahms, but I haven't heard much of his stuff. Stravinsky's stuff seems really interesting, but serial music has always been a bit hard for me to swallow, although I find it much more enjoyable now than I used to.