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The Orthotonophonium is a free reed aerophone similar to a Harmonium with 72 (sometimes 53) keys per octave, that can be played all diatonic key intervals and chords using just intonation. The instrument was created in 1914 by German physicist Arthur von Oettingen to advance his theories of harmonic dualism (now knows as Riemannian theory).
The Indian harmonium, hand harmonium, samvadini, peti ("box"), or vaja, often just called a harmonium, is a small and portable hand-pumped reed organ which is very popular in the Indian subcontinent. [1] The sound resembles an accordion or other bellows driven free-reed aerophones. [1]
A key is a component of a musical instrument, the purpose and function of which depends on the instrument. However, the term is most often used in the context of keyboard instruments , in which case it refers to the exterior part of the instrument that the player physically interacts in the process of sound production.
The Harmonium replaced the Sarangi in the early 20th century and went through tough times as it first was banned as accompanying instrument by All India Radio (A.I.R). Hindustani classical music exponents such as Walawalkar (and many others) established the Harmonium as solo instrument in Indian Classical music. [3] [10]
A glass harp, an ancestor of the glass armonica, being played in Rome.The rims of wine glasses filled with water are rubbed by the player's fingers to create the notes.. The name "glass harmonica" (also "glass armonica", "glassharmonica"; harmonica de verre, harmonica de Franklin, armonica de verre, or just harmonica in French; Glasharmonika in German; harmonica in Dutch) refers today to any ...
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. [1] This list categorizes keyboard instruments by their designs, and thus operations.
"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]
Because these keys receive less wear, they are often made of black colored wood and called the black notes or black keys. Black keys form a pentatonic scale. The entire pattern repeats at the interval of an octave. The arrangement of longer keys for C major with intervening, shorter keys for the intermediate semitones date to the 15th century.