Beunge and Bendja

I just came across this great article (in French) about the music and dance from Atar and I wonder if the're talking about this group from Atar that I saw playing on women's day at the French Cultural Center.
Even if I can talk and understand the Hassania - the arab dialect spoken by the Moorish tribes of the Sahara, I've a lot of difficulty to understand music or poetry (I'm lacking a lot of vocabulary).
 But it was very powerful music sang by the women, unfortunately none danced.