Haitian Vodou is a type of religion that people in Haiti have practiced for centuries. In Vodou, people believe in a single god called Bondye, who cannot be seen or known. Bondye is seen as distant and unknowable, so people in Vodou also believe in spirits called loa who they turn to in order to ask for assistance and appeals. In Vodou rituals and events, participants often ask the loa to intervene and help them with problems or difficult situations. These events often involve singing, dancing, offerings, animal sacrifice, and drum music. People also believe in ancestor worship, so when they pray and ask for help, they do so on behalf of the dead, who Vodou followers believe can still hear them.