02:50More or LessLennon or McCartney?BBC World Service Duration: 9 minutes Tue 11th Dec 2018, 02:50 on BBC World Service Americas and the CaribbeanAvailable for over a yearListen nowHow statistical modelling can work out which Beatle wrote which song. Show more GenresFactualMusicClassic Pop & RockFormatsMagazines & ReviewsBrandMore or Less Source: BBC Online