what was the drumming i heard from my window?

The Great Medieval Knights Tournament of the Horses parading through town to advertise their afternoon show at the Hluboka Chateau.

Yesterday I heard drumming outside my window. I thought it was a street performer, the kind I used to hear in the city, but the drumming began to get louder and I realized the drummer was in motion. I looked out my window and saw the parade just as it was leaving. Today when I heard the drumming, I ran downstairs to see the parade up close. That's when the horses stopped, one of the knights announced the show, while other performers handed out flyers.