When I say Classical/Baroque/Romantic music, those that were composed by Antonio Vivaldi, Johann Sebastian Bach,
Franz Liszt, Wolfgang Amadeus Mozart, Ludwig van Beethoven, Frederic Chopin, Richard Wagner, Johann Strauss II, Johannes Brahms, Pyotr Ilyich Tchaikovsky, Edvard Grieg, Edward Elgar, Sergei Rachmaninoff and many more.
I'll start. My personal favorites are Chopin's Nocturne op.9 no.2 (specially the one that was played by Yundi Li), Beethoven's 9th Symphony op. 125(I love the long version in which the running time is 1 hour+ and was conducted by Herbert von Karajan), and Erik Satie's Gymnopedie no. 2.
I also like Tchaikovsky's The Nutcracker, Vivaldi's Four Seasons, Mozart's Piano Sonata No. 11(Rondo Alla Turca), Brahms' Hungarian Dance no. 5, Richard Wagner's Ride of the Valkyrie, Grieg's In the Hall of the Mountain King and so much more..hehe
So, what's yours?