The Hymn sung by the Kouretes invoked a daimon, the greatest Kouros, who was clearly the projection of a thiasos of his worshippers. It accompanied a magical dance and was the vehicle of a primitive sacramental cult.
Harrison argues that the Kouretes Hymn exemplifies the hymn as collective psychological projection — the deity summoned is the externalized form of the worshipping group’s shared emotion and energy.
, Themis: A Study of the Social Origins of Greek Religion, 1912thesis