Yeah, the city wall would sound great if you only keep the bones in line. First, lock every control you’re using into a dedicated null—no stray keyframes. Second, use a driven key on the audio’s volume to drive a time‑based expression that reads the tags, but add a small dampening factor so the jitter doesn’t explode. Third, bake the expression into a separate layer before you hit render; that way the main comp stays clean. And finally, if the rig crashes twice in a row, you’re probably cursed—reset the cache, rename the files, and pray you don’t see the red ‘crash’ icon again.