First, I will assume you check all fuses in BOTH fuse boxes. The interior lights are Fuse 16 inside the engine compartment. There should be a pink wire from the fuse box to each of those bulbs. From the other direction there should be yellow wires from the Dimmer switch, and each of the door switches.
If you have one of those neon 12 volt tester that looks like a pointy screwdriver with a wire with an aligator clip on it, connect the aligator clip to the chassis, pull out the dome light fuse and poke each of the sockets for the fuse blades. One of them should cause the bulb in the tester to light up. If it doesn't your problem is before the fuse box. If it does light up, double check the fuse.
If the fuse is good (put in a new one, or one you know works, they don't always look bad when they are), go to one of the bulb that is easiest to reach and use your tester from chassis to the leads in the bulb socket. One of those should light. If it does you have an issue somewhere in the yellow wires.
If it doesn't light up there is an issue between the fuse box and the lights along the pink wire.
I would look to wherever your sound bar light was tied in if it is aftermarket. If this is the pink wire it has to be at or before the junction or not all the lights would be affected. I don't think it would be the yellow wires because either the dimmer switch or either of the doors should cause the lights to light up independently.