Joining Graham on his virtual sofa are: global pop superstar Lady Gaga, talking about her new album Chromatica, Captain America Chris Evans and Downton's Michelle Dockery, together in crime drama series Defending Jacob, Hollywood star Josh Gad (Frozen, and Beauty and the Beast), in new musical animated sitcom Central Park and Chewing Gum star Michaela Coel, in new BBC drama I May Destroy You. Singer-songwriter Niall Horan chats and gives a home performance of his single Black and White.