While we were staging My Fair Lady, with characters attending the "Ascot" horse race, full sound effects thanks to Will De Witt and the band (Manta, Pacific Winds, et al.), a real horse race occurred at the Kentucky Derby.
Stunning upset. Listen the announcer for his announcing during the race about "Mine that Bird."
For some interesting thoughts on the event, the horse, and American sports, check out this Sport's Illustrated article.