KnowraPump organLinked fromLinked fromThe 4 pages that link to Pump organ, each with the reason it gives.All 4Broader topic 2Related 1Compared with 1Keyboard instrumentRelated: Its keys select reeds, while bellows supply the airflow.Pipe organCompared with: It uses airflow and stops like a pipe organ but generates sound differently.Free reedBroader topic: It applies the same sound source on a larger, keyboard-based scale.Organ (music)Broader topic: It is a distinct organ type whose sound source differs from the pipes of a pipe organ.