organ [1]

Wind instrument with several keyboards; it produces sound by means of pipes that are fed by a blower.

organ console

Console consisting of the mechanisms controlled by the organist (e.g., manuals, pedals, stop knobs).

swell pedals

Mechanisms that open and close the swell box valves to control volume; the swell box houses the pipes of one or more manuals.

toe piston

Mechanism controlled by foot that prepares the pipes in advance, making them sound only when the pedal is pushed.

thumb piston

Hand-controlled mechanism used to prepare the pipes of a manual in advance, making them sound only when the piston is pushed.

manuals

Each of the series of keys that the organist plays by hand, which control one or several pipes of the same note.

coupler-tilt tablet

Plate that controls the mechanism joining two or more manuals.

pedal keyboard

Series of keys that the organist operates by foot.

pedal key

Lever that is lowered using the foot to allow air to enter and produce sound.

crescendo pedal

Pedal mechanism allowing certain combinations of pipes to sound and increasing their number until "tutti", when all pipes are heard.

great organ manual

Series of keys that make up the main keyboard, which is used to play the most important parts.

choir organ manual

Keyboard that controls a series of pipes at the front of the organ; its timbres are softer than those of the great organ.

swell organ manual

Keyboard that controls a series of pipes enclosed in a wooden frame (swell box); its movable valves are controlled by a swell pedal to obtain variations in volume.

stop knob

Device attached to a stop rod that controls the slider, which allows a row of pipes to sound or remain silent.

music stand

Inclined board where the organist places music.