Absolutely. My office is in a basement. The walls are all 5/8" drywall with 3.5" of rockwool inside, plus 6" of rockwool in the rafters above the drop ceiling.

Absolutely. My office is in a basement. The walls are all 5/8" drywall with 3.5" of rockwool inside, plus 6" of rockwool in the rafters above the drop ceiling. And that's before I get to the sound treatment on the actual walls. People lose their minds when they hear the raw recordings from the vocal booth that's directly behind my work desk. And it was just a closet before, outfitting it just wasn't that expensive.