Sometimes reading about an established artist who keeps answering the same old questions about inspiration, what to expect from a performance or their pet rock can be a little droll and dull. Rocker Francois van Coke, who will take to the stage alongside Spoegwolf at the Sunset Music Series at the Walter Sisulu National Botanical Garden on 28 June, has spent years answering those questions. Yet despite a career that has seen him front iconic ban…