So I have been obsessed with portative/portativ organs lately. I used to think that possibly modifying an accordion with pipes would be sufficient, but the pipes for more than a 2 octaves would end up being too bulky to be small and portable - most accordions are 3 octaves or more. The following is a video of a portativ organ, played beautifully in the perfect environment - a hall for reverberation. This last weekend, I picked up 2 ranks of pipes to build 2 portativs that I had won in an auction - one out of 4' Tenor Celeste pipes and one out of 8' Flute pipes. Obviously, I will not be using the entire rank but only about 2 octaves. I will have to figure out a good way to make the bellows and action.