It's sad at least some of us probably never heard about him today, but I can say this: Tambwe Tech and Vox Dei walked so that the likes of Olivier Kalabasi & Moise Matuta could run. May he RIP.
The way I see it, Congolese gospel had largely benefitted from keyboards, drum machines and other electronic instruments coming to the country and Vox Dei must've been the outliers at that time. How successful were they?