It wasn't Zakoko singing, it was King Kester Emeneya singing. Aime Buanga recorded this album in Paris with Somono Dolce, Japonais, Nene Tchakou, Nono Manzanza, Cesar Loboko, Koumba Bellow and co. Few months after he went to Kinshasa and recruited Dolin Masengi, Jordan Kusa, Zakoko, Alvarito B52, Kaddy Bass, Pitshou Mina, etc. He gave concerts there and shooted a few videoclips with them. Zakoko's voice was close to King Kester Emeneya, which made Aime Buanga decide to let him sing Mikiliste in concerts. Thats'also why he put him in the Zakoko. He would later end up singing lead in the remix-version, that they recorded in Kinshasa.
Aime Buanga is normally as bassplayer. In Wenge Musica 'Bakolo Esthetique' and Wenge Musica 'Aile Paris' he used to play bass. He saw that Congolese people weren't really accepting instrumentalists as bandleaders, so he decided to switch to the singer role.