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
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.