Ludovic Hunter-Tilney looks at 'It's the Hard Knock Life' from Broadway's musical Annie and its influences on Katy Perry's 'Roar' and Jay-Z's 'Hard Knock Life (Ghetto Anthem)'. Credits:Columbia, Roc-A-Fella, Columbia
Each week we bring you the story of a song, from its origins and early recordings through cover versions good and bad. Each episode is written and presented by an FT music critic or contributor. Formerly called FT Arts.