I'm turning a 12'x20' room with 8' walls and a "barn type" ceiling that goes up to 10' into a recording / jam room. It is completely drywalled at this point. The room is separate from the main house. I would like advice on: 1. Sound-proofing the room and also making the room sound as good as possible. The walls are made of 2x4 with insulation, drywall on inside and wood siding on the outside. The ceiling is made of 2x4 with insulation and drywall inside and plywood outside with typ built up roof. Any suggestions here that will go hand in hand with making the room sound good? 2. What should I do to the ceiling? 3. Walls? 4. Floor? I have read several of the posts about sound traping the corners and how to build them. I'm interested in what should go on the other areas, walls, floors, ceilings..... I am completey new to this and any suggestions will be greatly appreciated.