What is the fine-grained topic of the following text: Mpumelelo Mcata is perhaps best known as one part of internationally acclaimed South African SAMA award winning band the BLK JKS – although he plays the guitar, self-taught at that, he is quick to remind anyone who will listen that he is not a guitarist but a conduit and artist. Only return the topic.
Mpumelelo Mcata's role in the band BLK JKS