Huw Stephens is our guide to the Green Man Festival in the Brecon Beacons. As a DJ Huw has been to many festivals but the Green Man is a favourite. Set in his homeland of Wales the festival is not just about rock music but also about the place in which it is set. This year festival goers are invited to spend time on the site before the music starts to get back to nature and settle into the spirit of the place. Huw meets festival goers, musicians, local food producers and druids to try to understand why hearing music in the great outdoors can be such a powerful experience.