Chapter 9 The studio environment Lighting. Ventilation and air-conditioning. Foldback systems. Studio decora- tion. AC mains supplies. Earthing. 9.1 Some human needs Much has been written in the preceding chapters about the studio rooms being, first and foremost, rooms for musicians to play in. Obviously, all the individual tastes of every musician cannot be accommodated by any one studio design, so the `ultimate' environment cannot be produced. Nonetheless there are a few general points which are worthy of consideration. Light colours, for example, make spaces feel larger than they would do if finished in dark colours. In