The hardest part was placing the lights to avoid lens flare and adding unwanted light to the black background. The exposures were all automatic.
The modifications (a/k/a creative aspects) were to place diffusers on both lights and a warm filter over the back light. The front light was through a Gary Fong plastic dome and the back light was through a Lumiquest Promax Softbox III.
You might notice the back light isn’t hitting in exactly the same place on Elvis in the bottom picture. I eventually moved it to the right and also raised the background about a foot to block spillover light causing a little lens flare. I think the base and Mr. Presley’s hair look better with more of the warm back light as well.