London meditating - prom in the dark

This year's BBC Proms will be, partly at least, in the dark so people "can get away from the world by immersing themselves in meditative, mindful music". The London summer festival runs from 19 July to 14 September, it's mostly classical, but it will also feature hip-hop, the Clangers, and Radiohead's Jonny Greenwood playing - classical music. Guardian...