Music festivals are great for those moments when everyone senses they’re watching something special. There’s a feeling that goes around, like the whole crowd is connected. It’s electric. Glastonbury no doubt has dozens of such moments each year but we’re willing to bet that this performance by Beyonce is up there with the best ever. Killer song, killer band, killer backup dancers, plus lasers, fireworks and well, sheer amazingness. In other words, if you don’t like this video, you don’t like music. This should get you ready for your weekend.