I had the opportunity to meet Dai Robs, a good guitarist & singer and his acoustic solo work is an absolute pleasure to listen to. I decided to go for a low-key look for the images for something a little different. When I saw Dai performing, it just seemed the right thing to do, have him appear out of the darkness with his guitar. You can find out more about Dai Robs here (link).
Graham had the idea of the split lighting which I think works well. ISO 200, 1/200 sec, F11.
To get the low-key look in a pub environment, I used a fast shutter speed and small aperture to kill the ambient light. Then relied on flash to illuminate Dai Robs. ISO 200, 1/200 sec, F13.
Photo Rebel 
It worked out really well, great shots.
P.
Thanks Paul… I did try B &W but I preferred the toned down desaturated look.
Did you notice Aperture 3 was released? Still catch up to Lightroom as far as I can see…