Black Kids & Foals Play iTunes Festival

Many of my best photos from this were unusable due to terrible lighting for both shows. I managed to pull a few out of the bunch that where the lighting was passable, but I really don't understand why when they give photographers three tracks without flash to photograph an act they can't provide at least one of them with reasonable lighting.
I hope things improve as I'm down to photograph a few of the iTunes Festival shows, all being hosted at Koko.