The Aïssawa brotherhood, founded by saint "Shikh L'kamel" Sidi Mohammed Ben Aïssa who died in 1526 and whose tomb is located in Meknes, is one of the mystical orders which give music an eminent spiritual role. The ecstatic dance, "L'hadra" means the "presence" of divine presence and the presence of inhabitant spirit. "Tariqa", the way is a long preparation of pressive intensity witch must lead the followers from suffering to relief. It composed from three stages to lead to the trance "Hadra":
1- "Hizb" : incantatory recitation
2- "Ddikr" and "Horm": long series of chants of recollection
3- "L'Haddun" : the invocation of the divine uniqueness of god.
