"Guards" set on Saturday night was perhaps the most challenging show I have ever photographed. Would have been nigh-on impossible, back-in-the-day when we only had film... It was dark, dark, dark, and there was a lot of smoke too. Like dry ice, but more smoky. Very cool to watch, but a tad tricky to photograph.
Now I know why. It was Earth Hour. Or close enough... good enough reason for very-low-to-no light! :-)
More photos on Flickr: http://www.flickr.com/photos/alisontoon/sets/72157633093771192/