Ibra Fall founded a sub-group of the Mouride bortherhood called the Baye Fall (Baay Faal in Wolof). Many Baye Fall substitute hard labor and dedication to their marabout for the usual Muslim pieties like prayer and fasting.
The members of the Baye Fall dress in colourfull ragged clothes, wear their hair in dreadlocks or ndiange ('strong hair') which they decorate usually with homemade beads, wire or string. Women usually are covered in draping coverings including their heads and occasionally are known to wear decorative handmade jewelry made from household or natural items. In modern times the hard labor is often replaced by members roaming the streets asking for financial donations for their marabout.
Several Baye Fall are talented musicians, such as Cheikh Lo, and Youssou N'Dour recently come to Belgium with yet another talented Baye Fall singer called Carlou-D... and I was there (thanks to Tschombe!). Enjoy... this is a piece of the dancing part (look up the music on internet ;-)