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A hand-pumped Indian harmonium, of the type used in South Asia, here used at a European jazz festival.. The pump organ or reed organ is a type of organ using free-reeds that generates sound as air flows past the free-reeds, the vibrating pieces of thin metal in a frame.
The break was between middle C and C-sharp, or outside of Iberia between B and C. Broken keyboards reappeared in 1842 with the harmonium, the split occurring at E4/F4. The reverse-colored keys on Hammond organs such as the B3, C3 and A100 are latch-style radio buttons for selecting pre-set sounds.
The basic components of an Indian harmonium include: a wooden body with two metal handles for carrying, banks of brass reeds (often 1, 2, or 3) set on a wooden reed board, a pumping apparatus , air stops (including stops for drones), and a keyboard (which is similar to a piano keyboard but with a smaller number of keys). [9]
The most common of these are the piano, organ, and various electronic keyboards, including synthesizers and digital pianos. Other keyboard instruments include celestas , which are struck idiophones operated by a keyboard, and carillons , which are usually housed in bell towers or belfries of churches or municipal buildings.
Novelty instruments or various types that operate on the same principles. These pipe organs use a piano roll player or other mechanical means instead of a keyboard to play a prepared song: Orchestrion; Fairground organ (or band organ in the USA) Dutch street organ; Dance organ; The wind can also be created by using pressurized steam instead of air.
What primarily distinguishes the spinet is the angle of its strings: whereas in a full-size harpsichord, the strings are at a 90-degree angle to the keyboard (that is, they are parallel to the player's gaze); and in virginals they are parallel to the keyboard, in a spinet the strings are at an angle of about 30 degrees to the keyboard, going ...
An electric organ, also known as electronic organ, is an electronic keyboard instrument which was derived from the harmonium, pipe organ and theatre organ. Originally designed to imitate their sound, or orchestral sounds, it has since developed into several types of instruments: Hammond-style organs used in pop, rock and jazz;
"Enharmonic keyboard" is a term used by scholars in their studies of enharmonic keyboard instruments (organ, harpsichord, piano, [4] harmonium and synthesizer) with reference to a keyboard with more than 12 keys per octave. Scholarly consensus about the term's precise definition currently has not been established. [citation needed]