Soundproofing
https://www.evernote.com/shard/s449/sh/78eb4d8f-c2dd-4442-b5e3-a1802efb2196/f368e8b762c7cfc15ba99810533f2cc9
You have a rock band, and also no area to practice. Well, you could practice in your cellar, garage, or bed room but you reside in a condominium, or a removed house with next-door neighbors crowding you on both