Various kinds of ritual dances and music, originating in shamanistic practice, are also performed at shrines.
Such performance is a way of calling the deities to be present for prayers for wishes and wellbeing.
Dance and music performances at shrines are also a way to placate the spirits of the departed, so they will be benevolent and not harm the living.
From the Buddhist standpoint, the spirits at shrines are beings caught in the cycle of karma like other living beings. However, kami can also serve as protectors of Buddhism, so that knowledge of the Dharma can spread.