Fourth of July:
Guests arrive at a firework stand blowing up due to it being near a gas station as patriotic music plays. They get scared by a burnt Uncle Sam as well as people dressed as various presidents, colonists, or soldiers from the American Revolution (both American and British) with burns all over their bodies and clothes or missing fingers.
Listen to Sue Suhyun Kim's arrangement for this holiday here:
https://soundcloud.com/suhyun-kim-932755037/holidays-of-horror-fourth-of-july-1
And read about the other holidays and their music at: https://www.myusemuse.com/holidaysofhorror