Garden Soundproofing
https://tysonuiys552.skyrock.com/3325085126-Soundproofing-Foam-Is-it-the-Solution-to-Your-Noise-Troubles.html
You have a rock band, and no location to exercise. Well, you could practice in your cellar, garage, or room but you reside in a condo, or a removed home with neighbors crowding you on both sides. What sound control