Hardeep Singh Kohli visits one of the largest travelling cultural festivals in Europe - the National Eisteddfod of Wales. This year it is being held in Cardiff and Hardeep explores the phenomenon with the likes of Bryn Terfel, Cerys Matthews, Connie Fisher and Matthew Rhys. He delves into the pink pavillion and the strange rituals of the Bards of the British Isles, all in the city with one of the oldest Sikh communities in the UK.