Excellent control of lighting, with a great presentation. The only thing I may have added to this shot is a piece of plexiglass for the stage to catch a bit of reflection as a base for it to sit on, so that it doesn't appear to be floating in air. Still gets a nine from me.
The colors and compaosition are striking, well done and beautiful. The image is, however, a little noisy for my taste; there are abundantly grainy portions of the slinky red, indigo and violit bands.
Great colours, good lighting, simple scene and composition. A wider angle perhaps to add some perspective distortion to create more interest and depth but other than that, this is a good effort