Resizing a real accordion only influences volume, i.e. the harder you push/pull the faster air flows over the reeds. And you inevitably get no air flow at all w

Resizing a real accordion only influences volume, i.e. the harder you push/pull the faster air flows over the reeds. And you inevitably get no air flow at all when you switch between pulling and pushing the bellows, so you have to time this right. It's a fascinating instrument.