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The only completely chromatic harps are the double (arpa doppia) and triple (Welsh) harps and cross-strung harp. Sébastien Érard harp mechanism. The double-action pedal system was first patented in London by Sebastien Erard in 1801 (patent number 2502) and 1802 (patent number 2595). In 1807 Charles Groll was the first to register a patent ...
She plays pedal harp (also electro and Celtic harp), as well as historical instruments (single and double action pedal harp). She has written articles on musicology related to the harp and harpists. A book by her, entitled Elias Parish Alvars, Life, Music, Documents published in 1999, received the Harpa Award (Prague 1999).
The rival Érard company responded by commissioning Maurice Ravel to write a piece to display the expressive range of its double-action pedal harp. [2] [n 1] Ravel completed his Introduction and Allegro for a septet of harp, flute, clarinet and string quartet in June 1905, dedicating it to Albert Blondel, director of Maison Érard. [2]
The cross-strung harp or chromatic double harp is a multi-course harp that has two rows of strings which intersect without touching. While accidentals are played on the pedal harp via the pedals and on the lever harp with levers, the cross-strung harp features two rows so that each of the twelve semitones of the chromatic scale has its own string.
Pedal Harp, Double-action Harp, Diatonic Double-action Harp France * Only lowest and highest octaves shown. Tuning proceeds through 6 + 1 ⁄ 2 octaves using the C ♭ diatonic scale Harp, Celtic 34 strings 34 courses[*] C 2 D 2 E 2 F 2 G 2 A 2 B 2 [ . . . ] * C 6 D 6 E 6 F 6 G 6 A 6. Clàrsach, Folk Harp, Lever Harp British Isles
Throughout the seventeenth and eighteenth centuries, harp makers in Europe added levers and other mechanisms to increase chromatic capability of the harp. Eventually, in the early nineteenth century Sebastian Erard built the first double action pedal harp, the predecessor to the present day concert grand pedal harp. [2]
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The Gravikord is a 24 string electric double bridge-harp invented by Robert Grawi in 1984, [1] which is closely related to both the West African kora and the mbira. It was designed to employ a separated double tonal array structure making it possible to easily play cross-rhythms in a polyrhythmic musical style in a modern electro-acoustic ...