So this is my problem. In 2 months, my new drum room/man cave/unfinished basement is an echo chamber. Finishing might or might not happen. I'm setting up 2 acoustic sets and an electric kit. Any good first ideas to keep the sound manageable? It's just me playing old garage band music through my E kits big speaker. I can be loud, the wife likes my music and I love the sound of real cymbals, but ...Any ideas would be appreciated. This is not an apartment with walls. All Concrete, steel beams, wood, and fiberglass insulation. I was thinking blankets hanging from the rafters as a start.