This photo of @_dutch_dame_ was created with five lights.
The key light was a 17" white beauty dish with grid and CTO gel. The second light was a bare speed light with blue gel below for colored fill. The third light was a gridded reflector with blue gel on the background to create a pop of color behind. The fourth and fifth light were modified with reflectors and gelled blue. They were kept on through the long exposure to help create the light trails. I moved the camera throughout the exposure to get different light trail shapes and used a fan to create hair movement. I also shifted the white balance in post to enhance the blue (this was also the reason for the CTO gel on the face) and to counteract the color temperature of the modeling lamps.