"Mmuo" refers to spirits in Igbo cosmology, a part of the traditional beliefs of the Igbo people of southeastern Nigeria. In the context of festivals and cultural ceremonies, "mmuo" can refer to masquerades or the masked performers who represent these spirits or ancestors. These masquerades involve elaborate costumes, dances, and performances and are a significant aspect of Igbo culture, symbolizing the connection between the physical and spiritual worlds. They play a role in social control, oral tradition, and the spiritual life of the community, and they participate in public festivities, funerals, and other social gatherings. Watch the video to learn more.