Complete system, including tracker bar (or key frame or other sensing mechanism), pump, reservoir, pneumatic stack, wind chest, etc. of an automatic musical instrument which utilizes wind pressure or suction (or a combination of both) to operate the player mechanisms.

1. Adjective describing a musical instrument which is operated automatically by the action of wind pressure or suction (as opposed to mechanical). 2. Small bellows, especially one used in a pneumatic stack.

A cylinder musical box with multiple arrangements pinned onto the cylinder. One type was a revolver movement that had a separate comb and bedplate for each cylinder and was like several complete music boxes in a single case. The other was a more conventional box with the airs arranged in different styles, e.g., sublime harmony, tremolo zither, etc.

The classical term used to describe a portable, hand-cranked barrel organ or similar instruments.

A person who sets the comb to the cylinder. Also known as a setter.