This is a poured concrete foundation wall that I framed with 2x4s 16 in on center. And then filled the bays with rockwool insulation. And then I used landscape weed fabric and staples to cover it.. The weed fabric is what goes in garden flower beds.. it's pretty inexpensive and available at all the home improvement stores.. lowes home depot.. this works great to stop the echo and feedback from sound waves bouncing off a concrete basement walls. I bought a tapestry of guitar amps and stapled that over the top.. and I put some guitar wall hangers up on the studs. As well as hung some of my rack gear as well. My room is on the small side so floor space is at a premium.