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More tidbits on orchestral effects from 1820-1870. http://www.music.gla.ac.uk/~tfowler/...Orchestra.html Also there is an article written about early valve systems shown in their chronological order many of which weren't invented until after 1827 (Beethoven's death)
Check out the following: http://www.angelfire.com/music2/thec...ew_page_2.html
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