Bon Odori is a dance performed during the Obon Festival. It was originally a dance to welcome the spirits of the dead. These dances and the music that accompanies them are different for every region of Japan. Usually, the Bon dance involves people dancing around a yagura, a high wooden scaffold. Obon is an annual Buddhist event for commemorating one's ancestors. It is believed that each year during Obon, the ancestors' spirits return to this world in order to visit their relatives.