Anyone attempted to hide wires in a Exterior Wall?

[PaniqL]

After Mounting my Speakers, i now have the challenge of wiring the speakers and attempting the best wire management.

The TV and Speakers are mounted on a exterior wall so the wires cannot be fished inside the wall.

I seem to have OCD or something as i would hate to even use wire tunnels or something similar as i want a perfectly clean looking wall.

I wondered if anyone here has attempted to hide wires with a exterior wall, i thought i could maybe use a chisel and create a tunnel in the brick and then fill over the top. Would this work? Or are there better Ways?

Im just looking for general help.

Thanks
- Panic