Heineken Music Hall was built for the single purpose of hosting pop concerts of the highest acoustic quality. It is built as a black box; basically a work area where a stage and associated decor are put in place according to the requirements of each event. The black box has a basic acoustic in respect of which reverberation has been minimised to the greatest technically achievable extent, also in the lowest frequencies. All walls and the ceiling consist of broadband sound absorbing materials of considerable thickness. Special attention was paid to the sound insulation of walls and roof because of nearby dwellings.