The most important thing when lighting stuff is to think about what kinds of lights there could possibly be in the scene at hand, if it was real.
It seems to me you’re going for a night setting here, so you would pretty much be limited to artificial lights - in this case I see before me some strong searchlights, think ‘Batman the movie’ here…
First rule: avoid lights that appear to come straight from the camera position. It makes everything look flat and kinda boring. So, I would start by placing some spotlights on the roofs of some of the buildings, and aim them towards the ships in the air. You can also include imaginary buildings off-screen so to speak… the row of houses probably continues way behind the camera as well. Lights coming from hard left and right in relation to the camera.
The singer here would probably have brought his own light rig (or he might have some roadies handling that)… I’d try a theatrical light for him, strong spots placed on the surface he is standing on (I presume it’s the roof of a building)… so he would be dramatically lit from below…
Keep working now :wip: