Hello, I am building a studio in our basement and was wondering what type of batting (or insulation) would be recommended around the concrete walls. Fortunately, I will be able to isolate this room from the entire house and it will have 9 foot ceilings. For the two studded walls you see below I will be using double sheet rock with green glue. Here is the sketch up model. The wall on the left and across the top is concrete. They are also framed and will have 1 layer of sheetrock. What would you recommend as insulation, or the best soundproofer between the studs on the concrete walls? Thx.