'Sing-Sings' in PNG are held for a variety of reasons, but can be hard to find as they are most often held in remote villages, inaccessible by vehicle.  A 'Sing-Sing' might be associated with paying off a bride price, a moga ceremony, celebrating a particular harvest, or after clarifying a land dispute.  Whatever the reason, there will be a lot of brilliantly costumed people painted and dressed up with feathers, pearls, shells and animal skins to represent birds, trees, or mountain spirits, all parading, waving their weapons, singing and dancing around.  Sometimes an important event, such as a legendary battle, is even enacted at these musical festivals.