https://www.youtube.com/watch?v=Y_sEBgzamv8

Prisoners at a jail in Italy have produced a video of themselves performing Pharrell Williams track ‘Happy‘. The video, which was made with the blessing of prison officials at the Casa Circondariale Luigi Bodenza prison in Sicily, also includes prison guards and staff. It starts with an inmate cleaning the floor and according to a message at the start of the video, proceeds to show that ‘even inside it is possible to take part in the global movement for happiness’. The movement was sparked by the Pharrell Williams’ hit song of the same name. An introductory message says: “It’s the story of a dream – to try to be carefree – even behind bars,” before the video starts, which is called ‘Happy Dentro’, or ‘Happy Inside’.

More on the video here - http://.com/2014/07/31/watch-italian-prisoners-dance-to-pharrell-williams-happy-parody-from-behind-bars/