Don't mention it. Honestly, most of what I now know came from others in this thread, particularly Dom (burningdarkness). Go back and read through the posts - he gives some excellent recommendations. I haven't formed an opinion of Dido and Aeneas yet - I've only listened to it once through. Some Baroque music is incredible - much of Bach's work, Vivaldi's concertos, and several of Handel's work. Other material, though, is just okay. Telemann's Table Music is pleasant enough, but was originally written as background music, and as such, is good for that, but nothing moving.
As for other "movie" music, look for Adagio for Strings by Samuel Barber. You might recognize it from the movie "Platoon." I would describe it as beautifully sad.
I've been thinking of putting together my own list of favorites - maybe as a recommendation list for a good introduction to several different composers. Probably not useful for those more experienced than I, but might be a good sampling for people who are like me - just getting into Classical music. Here are a few I would recommend:
Bach: Brandenburg Concertos - Nikolaus Harnoncourt and Concentus Musicus Wien
Violin Concertos - Simon Standage, Trevor Pinnock and the English Concert
Goldberg Variations - Glenn Gould
Beethoven: Piano Sonatas (esp. Moonlight, Waldstein, Pathetique, and Appasionatta) - Wilhelm Kempff
Symphony No. 9 - Herbert von Karajan (60's performance)
Symphonies 3 & 6 - George Szell, Cleveland Orchestra
Symphony 5 - Carlos Kleiber, Vienna Philharmonic
Piano Concerto No. 5 - Fleisher, Szell, Cleveland Orchestra
Violin Concerto - Schneiderhan
Violin Sonatas (esp. Spring and Kreutzer) - Perlman, Ashkenazy
Brahms: Piano Trio No. 1 - Suk, Katchen, Starker
Hungarian Dance No. 5 - Herbert von Karajan
Violin Sonatas - Perlman, Ashkenazy
Dvorak: Symphony No. 9 - Istvan Kertesz, London Symphony Orchestra
Cello Concerto - Rostropovich, von Karajan
Mozart: Eine Kleine Nachtmusik - Orpheus Chamber Orchestra
Symphony No. 40 - Bohm
Horn Concertos - Dennis Brain, Herbert von Karajan
Clarinet Quintet - David Shifrin, Emerson String Quartet
Schubert: Death and the Maiden String Quartet No. 14 - Takacs Quartet
String Quintet - Rostropovich, Emerson String Quartet
Lieder (esp. Der Erlkonig, Death and the Maiden, Die Winterreise song cycle) - Dietrich Fischer-Dieskau, Gerald Moore
Late Piano Sonatas - Maurizio Pollini
Grieg: Peer Gynt Suite No. 1 - Herbert von Karajan
Barber: Adagio for Strings - Slatkin, St. Louis Symphony Orchestra
Vivaldi: Four Seasons - Trevor Pinnock and The English Concert
Any of his Concertos by Trevor Pinnock and The English Concert
Handel: Water Music, Concerti Grossi, Music for the Royal Fireworks - Trevor Pinnock
This isn't an exhaustive look, nor does it include some of my favorite pieces, but it consists of works that are more easily appreciated by people new to classical music. There are many more to explore, like masses, requiems, and oratorios, which I have come to love, by Beethoven, Mozart, Brahms, and Bach.
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