About: Split sharp

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A split sharp is a kind of key found in some early keyboard instruments, such as the harpsichord, clavichord, or organ. It is a musical key divided in two, with separately depressible front and back sections, each sounding its own pitch. The particular keys that were split were those that play the sharps and flats on the standard musical keyboard (the "black keys" on a modern piano). Split sharps served two distinct purposes. First, in the broken octave, they allowed an instrument to include deep bass notes while retaining a short, compact keyboard.

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  • Une feinte brisée est un type de touche que l'on trouve sur certains instruments de musique à clavier comme ceux de la famille du clavecin (épinette, virginal, muselaar). La touche chromatique (la feinte) est divisée longitudinalement en deux parties pouvant être enfoncées séparément et représentant des notes différentes. La partie postérieure est généralement placée en hauteur par rapport à la partie antérieure afin de faciliter l'accès à la touche postérieure. Les feintes brisées, en complément de l'octave courte, permettent de disposer de notes graves tout en diminuant la largeur totale du clavier. Les touches antérieures sont plus petites car ces notes sont généralement moins utilisées dans la partie basse des compositions. La touche antérieure est attribuée à une note diatonique plus grave, la partie postérieure permet de jouer la note chromatique correspondant normalement à la position de la touche. D'autres variantes sont possibles : sur certains instruments italiens, on retrouve les combinaisons suivantes pour les parties postérieures et antérieures : Mi♭/ Ré♯ et Sol♯ / La♭. Ces notes sont équivalentes sur des claviers tempérés, mais peuvent être à des hauteurs différentes sur des (voir Tempérament mésotonique). Cela permet à certains intervalles, comme par exemple les tierces majeures, d'être plus proches de la hauteur idéale et de sonner plus juste. La présence des feintes brisées nécessite une certaine habitude de la part du claveciniste ou de l'organiste. L'absence de feintes brisées empêche certaines œuvres anciennes de pouvoir être jouées fidèlement, car certains intervalles excèdent l'écartement maximum des doigts de l'interprète. C'est pourquoi l'interprétation de ces œuvres se fait de préférence sur les instruments anciens ou « à l'ancienne » possédant les dispositifs adéquats. (fr)
  • A split sharp is a kind of key found in some early keyboard instruments, such as the harpsichord, clavichord, or organ. It is a musical key divided in two, with separately depressible front and back sections, each sounding its own pitch. The particular keys that were split were those that play the sharps and flats on the standard musical keyboard (the "black keys" on a modern piano). Split sharp. A sharp key divided or 'split' into two parts: the front part is about one third the length of the whole. Usually the back part is set slightly higher to facilitate playing. Each part has its own [parts] so that two notes are available. In Italian instruments it was common...to provide split sharps for e♭/d♯ and g♯/a♭. The usual practice was to put on the front part the note that would normally be found there, e.g. e♭ and g♯. Split sharps served two distinct purposes. First, in the broken octave, they allowed an instrument to include deep bass notes while retaining a short, compact keyboard. Second, in older music, tuning was generally not done by equal temperament, which treats note pairs such as A♯ and B♭ as the same pitch. Instead, they were assigned slightly different pitches on enharmonic keyboards (particularly in "meantone temperament"). This allowed certain musical intervals, such as the major third, to sound closer to their ideal just value, hence more closely tuned to just intonation. Split sharps present advantages and disadvantages: "Obviously this would have its advantages under some circumstances in terms of intonation. However, the complexities of fingering and hand position dictated by such a keyboard configuration presented problems." Specifically: "Such devices were obviously an impediment to rapid scale work in the lowest bass register, but this does not matter greatly as Italian seventeenth-century music generally avoids writing of this kind." In modern usage, split sharps are usually the method of choice for custom keyboards that play 19 equal temperament, which, like meantone, uses different pitches for sharps and flats that are enharmonic in the standard 12 tone. (en)
  • Con tasto spezzato (o tasto scavezzo) si intende una particolare caratteristica, ormai in disuso, presente sulla tastiera di alcuni clavicembali, clavicordi e organi. (it)
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  • Con tasto spezzato (o tasto scavezzo) si intende una particolare caratteristica, ormai in disuso, presente sulla tastiera di alcuni clavicembali, clavicordi e organi. (it)
  • Une feinte brisée est un type de touche que l'on trouve sur certains instruments de musique à clavier comme ceux de la famille du clavecin (épinette, virginal, muselaar). La touche chromatique (la feinte) est divisée longitudinalement en deux parties pouvant être enfoncées séparément et représentant des notes différentes. La partie postérieure est généralement placée en hauteur par rapport à la partie antérieure afin de faciliter l'accès à la touche postérieure. Les touches antérieures sont plus petites car ces notes sont généralement moins utilisées dans la partie basse des compositions. (fr)
  • A split sharp is a kind of key found in some early keyboard instruments, such as the harpsichord, clavichord, or organ. It is a musical key divided in two, with separately depressible front and back sections, each sounding its own pitch. The particular keys that were split were those that play the sharps and flats on the standard musical keyboard (the "black keys" on a modern piano). Split sharps served two distinct purposes. First, in the broken octave, they allowed an instrument to include deep bass notes while retaining a short, compact keyboard. (en)
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  • Feinte brisée (fr)
  • Tasto spezzato (it)
  • Split sharp (en)
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