Assertion: reed's pitch | /r/HasProperty | dependent on the length of the pipes
Facets:
Source sentences:
text: The air rushing out through the bamboo pipes will naturally escape through the holes cut below the reeds, making no sound, but if the finger stops one or more of these holes, the air is forced up through the reeds, thus giving a musical sound, the pitch of which will be dependent on the length of the pipes and the force with which the air passes through the reed.