A reference to the chorus leader in ancient Greece, whose victory in the competitive choral dances was celebrated by erecting a small decorative structure. Found on http://www.encyclo.co.uk/local/21299
Cho·rag'ic adjective [ Greek ..., ....] Of or pertaining to a choragus. Choragic monument , a building or column built by a victorious choragus for the reception and exhibition of the tripod which he received as a prize. Those of Lysicrates and Thrasyllus are still to be seen at Athens. ... Found on http://www.encyclo.co.uk/webster/C/71