You are right. But it wasn't easy that he sung better.
Eboulement Totale was a very good album followed by Couvre Feu, but i'm waiting for Luissy, the full version of Fondation Etienne Mundele (un dollar aui reyaunne) and Facile a garer (i hope that the guy of Ambiance Congo uploaded it on the radio). But shortly after the release of this album, i think that the most musicians leaving the band and joined Viva Tendance.