With carpeting on the ceiling and walls, egg crates on top of the carpeting, mattresses and rolled up blankets covering the windows/window wells, and carpeting or blankets covering the doors, you should be able to keep out most of the sound.
(egg crates on top of the carpeting, mattresses; rolled up; blankets covering the windows/window wells) (you; should be; able to keep out most of the sound) (you; to keep out; most of the sound)
egg crates on top of the carpeting, mattresses you you
rolled up should be to keep out
blankets covering the windows/window wells
able to keep out most of the sound
most of the sound