A 1914 Orthotonophonium in the Museum of Musical Instruments of Leipzig University
Classification
Aerophone
Hornbostel–Sachs classification
412.132
Inventor(s)
Arthur von Oettingen
Developed
1914
Related instruments
Harmonium, Reed organ
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 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...
reeds). The harmonium, or pump-organ, has numerous forms, including the orthotonophonium and the peti or samvadini (the Indian floor harmonium, used often as...
Grand Piano, style Louis XVI, of the Schiedmayer Pianoforte Factory Orthotonophonium with 72 microtones per octave Signet of the firm of Schiedmayer & Sons...
known as the millioctave. He later created a musical instrument, the Orthotonophonium - a pump organ using 72 notes per octave, to further advocate harmonic...
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