I think they worked it that you can go from one to another over a month between mid january to mid february.. i.e. There is one per weekend, perhaps mopti and djene also..
The festival in Bolomakote in Bobo Dioulasso, Burkina Faso sounds great. Just missed it last time, its fairly grass roots and is organised I believe mainly by locals... Its a great initiative and warrants some support.. Its on over christmas..
http://www.youtube.com/watch?v=C6lbRVKDXFE