Nass Marrakech was formed in 1991, to investigate the traditions of the Gnawa, the Central Africans who were brought to the Mahgreb in the Middle Ages, to look for the memories of the old in the forgotten words of their songs (many in old Central African Languages) and also to write new songs with respect to the color and rhythm of the Gnawa, reflecting the experiences of today.. 

They appeared in Europe for the first time in 1992, with much success. Their music enchants audiences, and as many westerners participate in the healing dances as Mahgrebs. Nass Marrakech has evolved in directions previously unknown to Gnawa musicians with the inclusion of instruments foreign to Gnawa culture such as the djembe, tam-tam, mandolin, tabla and afro-cuban percussion. Their own compositions reflect concerns about racism, the need for peace, and relations between people Currently, Nass Marrakech tours with a group that includes: sentir (traditional bass), mandolin, oud, tam-tam, karkabas, tabla, djembe. The seven musicians transmit their energy from the stage , to lead the public into a trance...

Paul Bowles

 (Their Heads Are Green and Their Hands Are Blue, New York: Random House, 1963.) 

“The most important single element of Morocco's folk culture is its music ...  the entire history and mythology of the people is clothed in song.”