Usually done as an invitation to those in the world of spirits, to call them to join in a gathering or a celebration. For example: traditionally done on the afternoon prior to the Masked Trance Dance, to invite the spirits to inhabit the masks created for them. When we invite the spirits to become part of a project, the energy that feeds the project comes from resources deeper than an individual person can provide.
STAND TALL AND ERECT.
Feet: Place shoulder-width apart with toes pointing forward and parallel
Knees: Keep loose and slightly bent
Hands: Spread fingers widely and align middle finger along crease where leg joins torso
Arms: Hold stiff and out from torso
Head: Tilt back slightly, avoiding strain to neck. Close eyes
Mouth: Open as though calling out but make no sound