Answer:Key elements of a Taiko drum festival include: Costumes: Performers often wear happi coats (baggy-sleeved short cotton jackets) over black clothing, sometimes with white calligraphy. A hachimaki (white headband) and tabi (split-toe shoes) are also common. The obi (sash) is part of the happi coat attire. Music: The music is dominated by the powerful sounds of various sizes of taiko drums: ōdaiko (large drum), chūdaiko (medium drum), and shime-daiko (small drum). Other traditional Japanese instruments like the fue (flute) and shamisen (three-stringed instrument) may also be incorporated. Props: The main props are the taiko drums themselves, which vary in size and are made of different materials. The drumsticks (bachi) used to strike the drums are also important. The overall effect is a powerful and visually striking performance combining rhythmic drumming, dynamic costumes, and the visual impact of the large drums.