Old time fiddle tune "Bonaparte's Retreat," performed by Kentucky fiddler William H. Stepp. Recording made for the Library of Congress by Alan Lomax in 1937. This particular recording of the tune formed the basis for the "Hoe-Down" section of "Rodeo" by Aaron Copland.
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To my ear, this is like an Irish fox hunting reel, often played on small pipes to recreate the sound of the hunt. As for the comment, I take it to be pointing to which part of the tune represents the baying, retreating general.