[Oh the things Boyd knew about sound proofing.]

I do. One of them being to be particular in your materials selection. I have list on my work computer of some of the ones we've found most effective. Also work slow, take your time. When you're ripping into walls like that mistakes are expensive.

Also while I'm sure you'll be able to make the apartment much quieter to truly soundproof something you have to design and build it from the ground up to be that way.