Sexy 'Red Dress' song got people talking

Sarah Brand, a student of sociology at Oxford University, has released a song 'Red Dress', which she said was a "cinematic, holistic portrayal of judgement". The A.V. club said the video invited a "kind of car wreck curiosity", while Newsweek debated whether it was part of a "grand social experiment". BBC explores what's behind the out-of-tune song.