the second link sounds like this by lofombo a bit
lofombo joined mbilia bel's group recently with a particular status making him like the artistic leader of the group but he felt 12'd when one of the younger chefs wanted to make him sign paper of hour of arrival to rehearsal like he was one of their own,and felt humiliated after seeing a couple of earlier signs,so he abandoned them
that big mama song sounds like a very very subtle diss to tshala muana's song