Returning to this thread after a few days and thanking Helen for her comments, could I suggest that she has a look at my favourite YouTube video of all time where she will able to listen to two of the Manding musicians mentioned in my list - both of whom I have had the great honour and pleasure of meeting. Ballaké is one of the musicians in that video and by coincidence, I visited the compound of the great kora maker Lamin Suso when I was in The Gambia last month and he was working on a new kora for Ballaké to replace the one so thoughtless destroyed by American Customs Officials when he was leaving the USA at the end of his recent North American tour.
I have also had the pleasure decades ago of getting to know all the Scots traveller singers on my list - sadly all are now dead. In fact looking through the list, 6 of them have stayed in our house.