I just discovered them recently and to be honest, they are an awesome band. Certainly one of the most original bands in the country, thats for sure. It is because of people like them that Pakistani music industry will always remain light years ahead of the Indians.
For people not in the know, Overload basically combines the percussion instruments of Pakistani folk music with modern drums and electric guitars along with keyboard. From the songs that I have listened, I don’t think they do any vocals, but I may be wrong. Either way, check them out. Their music videos are on The Muzik quite frequently and someone might have uploaded them on Youtube.