Organ: wind instrument. Depressing keys or pedals will make the motors to action valves that send air in the pipes producing the notes.
Stop knob: allows to choose a rank of pipes.
Swell keyboard: solo division located inside the organ.
Great organ keyboard: keyboard controlling the main division of the organ.
Pedal board: keyboard controlling another division of the organ.
Pedal key: part of the keyboard that is depressed to produce a note.
Choir keyboard: keyboard controlling a small independent organ that plays softer than the main organ.
Coupler-tilt tablet: operates a mechanism that allows to join two or more keyboards.
Music arch: score support.
Pipes: pipes ensemble of the organ.

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A bell is a simple sound-making device. The bell is a percussion instrument and an idiophone. Its form is usually an open-ended hollow drum which resonates upon being struck. The striking implement can be a tongue suspended within the bell, known as a clapper, a small, free sphere enclosed within the body of the bell, or a separate mallet. Bells are usually made of cast metal, but small bells can also be made from ceramic or glass. Bells can be of all sizes: from tiny dress accessories to church bells weighing many tons.

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