The Royal Academy of Arts in London has just opened a huge retrospective of William Kentridge's work. It covers his early charcoal works on paper from the late 1960s, true to his explorations for the theatre. And then there's this series of documentary films he's been making in his studio during lockdown which have just had their premiere at the Toronto Film Festival. They're almost an anthropological study of what happens when the artist enters the studio and closes the door. He says: "I think of myself as an artist making drawings, even when the charcoal is replaced by a spoken word or by an ink word"