Mood: The mood of this video appears to be spooky and playful, with a sense of excitement and energy. The presence of a skeleton and the shocked expressions on the crowd's faces suggest a theme of horror or supernatural elements, but the overall tone seems lighthearted and humorous. The video may be a song or promotional material for a horror-comedy film.

Environment: The setting appears to be a crowded, nighttime event or festival, possibly a carnival or fair. The background is filled with people, and the atmosphere is lively and chaotic. The presence of a skeleton and the dark, blue-ish lighting suggests a nighttime setting with a focus on the supernatural or spooky elements.