Edited sentence: All they have to do is sing a song, any song.Because of intermarriage and a knowledge of relationships going back gnerations it is known that at any Maori social gathering there are likely to be many different Iwi represented.For the Iwi known as Ngati Pakeha this can be very difficult but it is fully in keeping with traditional custom.Ngati Pakeha.One very nice custom that recognizes the different Iwi is often seen at weddings and bithday parties.The names of the different Iwi and Hapu are then recited and a representative of the Iwi is invited to come forward and accept the slice of cake on behalf of their people.When the cake is cut, birthday cake, wedding cake or whatever, it is divided into slices