It seems that all lighting effects are natural. May be few of them(though I don't think so) are composited in post. The lighting effects are because of the way that place has been lit. My guess is a filter has been used to create this kind of lighting effect and changing the focus of camera(lights are out of focus). You will get a better result if you achieve this while shooting the video.
As Vishesh say, it appears that most of the effects are as a result of the lighting setup, but mainly as a result of the camera setup, with pretty shallow depth of field, which allows for the lights in the stage area to be thrown out of focus.
It also looks to me as if there are some Film Artifacts used tastefully in some places as well, such as Light Leaks, and other light related effects available from a number of sources, such as Artbeats and Pond5. You can also create them yourself in After Effects, using hand drawn shapes in various colors, which you then blur and use with various compositing modes (additive, overlay, etc.). It's a very subtle look, nicely done.
Thank you Vishesh and Joseph for your help and your tips. Do you mean that all those tricks were done on camera, during the concert and none of it is overlayed/composited footage? That's really amazing. Thanks a lot again, I'll try to look into it.
I saw nothing that absolutely required shooting at an actual music venue. I think this video was shot in a studio. I think this shoot was carefully planned with very good PLANNED shot selection, by a very good director and director of photography.
Everything could have been done in a studio where one can create the ILLUSION of being a cabaret, but where one can control the shot selection and the audience... or should I say, the EXTRAS? When the camera shoot up at the ceiling, all you see are lights. You don't see any ceiling material. Your mind accepts the illusion that there is a ceiling.
The giveaway was the trucking shot from the back of the room. How many times have you seen an actual music venue where all 40 people in the audience sit in the first 4 rows, with about 8 meters of empty space between the back row and the camera? The out-of-focus vertical images between the camera and the audience are easy to make in After Effects.
Former Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA
As Joseph said you can create the effects in AE with some stock footage of lights and then blending them in a very subtle way with your footage. Though its better if you learn how to achieve this through camera. I don't think it would be too difficult to do so. You have to learn about Depth of field a little and you can get these effects after experimenting for some time.
3D and Motion Graphics Artist