Eurovision Calling: Jason and Chelcee’s Ultimate Guide: Comedian Jason Manford and singer-songwriter Chelcee Grimes present Eurovision Calling: Jason and Chelcee’s Ultimate Guide. This entertainment programme will see the pair explore why the Eurovision Song Contest is the greatest show on Earth. Using a mix of fascinating archive footage and revealing interviews with fans, experts and competitors, this one hour film will delve into the story of how the Contest has become the world’s largest live music event, creating global superstars and leaving an impact on the lives of many.