It is the closest community to Organ Pipe Cactus National Monument. Montezuma's Well, and Organ Pipe Cactus National Monument. Organ Pipe Cactus National Monument is in size. The pitch produced by an organ pipe is a function of its length. The pitch produced by an organ pipe is determined in two fundamentally different ways. Some organ pipe ranks are designed to be overblown. The Organ Pipe Cactus National Monument is named for the species. In organ pipe classification it is a flute/string hybrid. The diaphone is a unique and uncommon organ pipe. One of his experiments was an infrasonic whistle, an oversized organ pipe. Among the most common are the scientific, Helmholtz, organ pipe, MIDI, and MIDI note systems. The wind-pressure applied to an organ pipe affects its volume, pitch and character. From Lukeville to Why, SR 85 is designated the Organ Pipe Cactus Parkway by ADOT. Its straight grain also makes it a useful organ pipe material. An organ pipe may be either open or closed, depending on the sound desired.