No no, you're spoiling the wood now! Wires need nanoparticles added to balance out the impurities, but leaving wood pure allows you to hear the natural, round harmonics of the material.* Though it should probably be attached to the wall with proper hide glue, you wouldn't want the chemicals in an artificial adhesive to restrict the sound stage. Make it from Grenadilla, this is used in clarinets to help focus the resonance and would do quite nicely in a home to tune an acoustic listening chamber.
*Audiophools don't care that this is technically adding distortion, they think everything has its own characteristic sound.
I just projectile vomited after writing this. I should probably stop before the diarrhea, severe pain and sudden death come.