But why, out of every option in the orchestra, did the cello become the instrument of introspection? “That film, the story of cellist Jacqueline du Pré, is the cello film that has stuck with me most,” says Guðnadóttir. Catherine Warner is a music therapy practitioner who has long watched the cello play its introspective, insular part on film. More than any other member of the orchestra, introducing a cello is like casting another actor in a scene. Pair its resemblance to the human body with its similarity to our vocal range, and it’s no wonder cinema loves the instrument.