Koos has been a figure in the Gauteng underground Rock scene since 2007 when he and his friends founded Havoc Vultures in Pretoria. When Koos moved back to Johannesburg, he joined Black Pimp'n Jesus and he had a fruitful working relation with Evert Snyman with whom he produced and designed for multiple projects such as Pink Noise, Battle Cock, Gay Thing and Dragon Invasion.
In between and after these projects he produced various obscure albums under other names and with other musicians. He is currently the guitarist of Rugga Rock and Shark Rivers.
Projects in chronological order in reverse.