The toy piano, also known as the kinderklavier ( in German), is a small piano-like musical instrument. Most modern toy pianos use round metal rods, as opposed to strings in a regular piano, to produce sound. The U.S. Library of Congress recognizes the toy piano as a unique instrument with the subject designation, Toy Piano Scores: M175 T69. The most famous example of a dedicated composition for the instrument is the "Suite for Toy Piano" (1948) by John Cage.
Toy pianos ostensibly use the same musical scale as full size pianos, although their tuning in all but the most expensive models is usually very approximate. Similarly, the pitch to which they are tuned is rarely close to the standard of 440 Hertz for the A above middle C. A typical toy piano will have a range of one to three . The cheapest models may not have black keys, or the black keys may be painted on. This means they can play a fixed diatonic scale (or an approximately tuned version of it), but not the full chromatic scale, or diatonic scales in other keys. Typically, diatonic toy pianos have only eight keys and can play one octave. Other variants may have non-functioning black keys between every key (which would make it appear to play the between E/F and B/C), but they either do not play, play the same notes as an adjacent white key, or play a special sound effect. Some toy pianos cost hundreds of dollars.
In 1930, a toy piano metal rod design was patented by Alice Violet Bennett.
During the 1950s, J. Chein & Company of Burlington, NJ manufactured the PianoLodeon, a child's piano remarkable for the fact that it operated by a mechanism closely related to an actual player piano. The child could play the keys or let a small piano roll take over, the metal rods being struck by hammers propelled by a vacuum driven by a blower. In the 1960s, the Tomy Toy Company offered the Tuneyville Player Piano using organ music, in which air blows through pipes. The child can play the keys manually or insert a plastic disk to play a recognizable tune.
By the 1950s, the toy piano market was dominated by two main toy piano makers: Jaymar and Schoenhut, counterparts to the Steinway and Baldwin for adult pianos. Wooden keys and hammers were replaced by moulded plastic ones. In the late 1970s, Schoenhut was acquired by Jaymar, although the two retained their distinct identities. Jaymar/Schoenhut experienced difficulty during the recession of the 1980s, folding and eventually re-emerging as the Schoenhut Piano Company in 1997. Today, Schoenhut Piano Company is still the leading manufacturer, with other toy piano manufacturers: Hering from Brazil, Zeada from China, and New Classic Toys from Netherlands.
From 1939 to 1970, Victor Michel improved toy-piano conception. Michelsonne French toy-pianos are known for their uniquely distinctive sound.
Launched in 2000, the annual Toy Piano Festival, held in San Diego at the University of California, San Diego's Geisel Library, features a collection of toy pianos, recordings of compositions, and live performance of existing and new works written for toy pianos. The Festival influenced the Library of Congress to designate, in 2001, a dedicated subject heading and call number, Toy Piano Scores: M175 T69.
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