Organ crawl
Encyclopedia
An organ crawl is a tour of the inner mechanisms of a pipe organ
Pipe organ
The pipe organ is a musical instrument that produces sound by driving pressurized air through pipes selected via a keyboard. Because each organ pipe produces a single pitch, the pipes are provided in sets called ranks, each of which has a common timbre and volume throughout the keyboard compass...

, involving the exploration of parts of the organ not generally accessible to the public, including the pipes, chests, and blowers.
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