Name a character and the classical music piece that would be most appropriate, either generally, or for a particular event.
Keep it classical. Kudos if you Include a sample-link.
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Gimli and all his stocky relatives: In The Hall of the Mountain King, by Grieg.
track four
Hobbits tiptoeing from tree to tree through the forest: Tschaikovsky's Danse des cygnes.
track three
Elrond perusing dwarf-maps: Beethoven's Moonlight Sonata.
also track four (...And I do think Elrond would be pleased with Vladimir Horowitz.)