from noblesse oblige to let say force de frappe,koffi used to include our ethnic languages in almost every album,kitetela in ultimatum,tshiluba in magie,a bit of kimbala in noblesse oblige,kimbala/tshiluba in attentat...Its a shame our artists are rarely doing it these days so we are having more more monotonous songs of lingala and " abit of french to sound cool" in it a couple of historic/biblic references thats it