lol, 12 Balles isn't a group. It the name of an atalaku (the creator of cri's like Swabiwutu, Vandela, etc.). 12 Balles was along with Isiro 1er part of Loningisa Mbonda.
Promise Muisca was a band based in the quarter of Matonge, it had musicians like Alpatshino, Tosha Bass, Pathy Bass, Mboshi Lipassa, Corean Polystar, Marcahouse, Tutu Kaludji and many others.