tl;dr I want to cover my walls in flat (not eggcrate) grey material from crown molding down to the floor boards for sound damping and good looks. What are my options and where do I find them? back out on my own, but now as an adult who cares how things look, and also about abstaining from being a nuisance to the neighbors. I remember seeing in a thread a couple of years ago a basspic which also showed some ~12"*12"*1" pieces of what appeared to me as thin-framed grey cloth grills fixed somewhat randomly to the walls. They were probably foam, but they looked like 90's Crate grill cloth. They looked great through my laptop's screen and I have been thinking of those ever since. My interior designer suggested grey paint when she first glanced at my mahogany-hued floors and doors, and my stuff which would be out (marlboro-red bike, bubinga bass, sunburst guitar, Haida fish painting, old brown concert poster, other warm-colored odds and ends), and we really can't think of a better idea. Pretty sure it'll be sick. Now I think that just completely covering the walls with this classy soundfoamclothwhatever will, in addition to raising the listening/recording fidelity of the room and minimizing bleed to the neighbors, make eventual moving out easier as I'd only have to spot clean adhesive rather than re-white the walls. What materials should I be considering? Is there a sonic benefit to only using a few (randomly-placed to my eyes) squares rather than covering whole walls? Thanks in advance guys and gals!