[Don Howes]

The only trick the editor used is called “cloning”, which is how they got multiple copies of the performer onscreen at once. If you want to see how that’s done, do the following search on youtube “clone moving object”. That will give you some links that show how it is done.

The rest was playing with the lighting, a few sfx and a lot of fast cuts. Search on ‘editing music video” if you want to get an idea of how it’s done in general.