From the late 70s to the early 80s Manfred Bartmann took part in the German folk revival. The Irish Bouzouki was his main instrument then. Nowadays he prefers a 5-string guitar. The tuning comes from the Irish Bouzouki as well as from the Sahraoui guitar, which is a specially tuned Spanish or electric guitar. It is common amongst the Hassaniya speaking people in the so-called trab al bidhan - the North African "land of the white people" - which comprises the Western Sahara, Mauritania as well as small parts of Algeria, Morocco and Mali.