What could be more relaxing after a day of brain-stretching physics than a bit of singing? Tonight we are to be treated to what the event’s website claims will be the first ever physics “sing-along / listen-a-long”.

This evening’s entertainment has been heavily advertised around the conference. The posters read: “Come sing along to physics lyrics set to familiar tunes.” Then, rather worryingly, they reassured: “No singing ability required!”

I’m heading out to add my tuneless warble to the geek chorus. More tomorrow…