Can you make a bricks color and material change in sync with music?

I am very new to scripting and this is what i'm trying to do. I'm trying to make a strobe light essentially, and i want the loudness of the music (Preferably the low end of the music) to trigger a switch in the color and material of the brick. The sound file is under workspace/MusicScript/S1

MusicScript is the script that is playing a playlist of songs, and S1 is the sound file.

In the workspace, i added a new script to try to make the light work, and this is the script

" game:GetService("RunService").RenderStepped:connect(function()

end) "

Is there anything i'm missing? or any terms i've used wrong? Thank you!