These songs in many different styles embody the fundamental values of traditional Maori culture and form a vital part of marae ceremonial. Most common song types are represented: laments, love songs, war chants, songs of welcome, face-saving songs and witty occasional songs. They are remarkable for the sophistication of the music and the power and subtlety of the words. Both Orbell and McLean are widely known and respected and have published extensively. Margaret Orbell is the author of a number of books on Maori myths and poetry; Mervyn Mclean is the author of Maori Music (1996) and a study of Polynesian music, Weavers of Song (1999). Their Songs of a Kaumatua sung by Kino Hughes appeared in a similar format in 2002.