In the fourth of our dispatches from A Room for London – a hotel installation in the shape of the boat in Joseph Conrad's novella Heart of Darkness – we hear from the novelist, screenwriter and essayist Caryl Phillips.

For four days every month, as part of a year-long project by Artangel, a writer will stay in the boat, which is moored on top of London's Queen Elizabeth Hall, tasked only with writing an essay on the theme of London, rivers and/or Conrad.

During the year we are also live-streaming a series of concerts from A Room for London. The Swedish duo Wildbirds & Peacedrums introduce this podcast. You can catch up with the full concert here.