 This huge instrument, a combination of piano and organ, was basically a one-piece orchestra that contained three keyboards, eight registers, a pedal board and a set of pipes that reproduced the sounds of all the wind instruments.With it, Liszt could try out various instrumental combinations at his leisure as a further aid for his orchestration.While Raff was able to offer "practical suggestions [in orchestration] which were of great value to Liszt", there may have been "a basic misunderstanding" of the nature of their collaboration.