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Gravikord
The Gravikord is a 24 string electric double bridge-harp invented by Robert Grawi in 1984, 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 instrument. The Gravi-kora is a similar instrument, also developed by Grawi, which is tuned identically to a traditional 21 string kora. Description The Gravikord is based on the West African kora. It is made of welded stainless steel tubing, with 24 nylon strings but no resonating gourd or skin. The bridge is made from a machined synthetic material with an integral piezo-electric sensor. There are two handles located in elevation near the middle of the bridge. The bridge is curved to follow the arc of a strum from the hands which hold the shortened raised handles directly in the palms. A metal crossbar at the top of the bridge functions as a mech ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kora (instrument)
The kora (Manding languages: ''kɔra'') is a stringed instrument used extensively in West Africa. A kora typically has 21 strings, which are played by plucking with the fingers. It has features of the lute and harp. Description The kora is built from a gourd, cut in half and covered with cow skin to make a resonator with a long hardwood neck. The skin is supported by two handles that run underneath it. It has 21 strings, each of which plays a different note. These strings are supported by a notched, double free-standing bridge. The kora doesn't fit into any one category of musical instrument, but rather several, and must be classified as a "double-bridge-harp-lute." The strings run in two divided ranks, characteristic of a double harp. They do not end in a soundboard but are instead held in notches on a bridge, classifying it as a bridge harp. The strings originate from a string arm or neck and cross a bridge directly supported by a resonating chamber, also making it a lute. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cross-beat
In music, a cross-beat or cross-rhythm is a specific form of polyrhythm. The term ''cross rhythm '' was introduced in 1934 by the musicologist Arthur Morris Jones (1889–1980). It refers to a situation where the rhythmic conflict found in polyrhythms is the basis of an entire musical piece. Etymology The term "cross rhythm" was introduced in 1934 by the musicologist Arthur Morris Jones (1889–1980), who, with Klaus Wachsmann, took-up extended residence in Zambia and Uganda, respectively, as missionaries, educators, musicologists, and museologists. African music One main system African cross-rhythm is most prevalent within the greater Niger-Congo linguistic group, which dominates the continent south of the Sahara Desert. (Kubik, p. 58) Cross-rhythm was first identified as the basis of sub-Saharan rhythm by A.M. Jones. Later, the concept was more fully explained in the lectures of Ewe master drummer and scholar C.K. Ladzekpo, and in the writings of David Lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravikord
The Gravikord is a 24 string electric double bridge-harp invented by Robert Grawi in 1984, 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 instrument. The Gravi-kora is a similar instrument, also developed by Grawi, which is tuned identically to a traditional 21 string kora. Description The Gravikord is based on the West African kora. It is made of welded stainless steel tubing, with 24 nylon strings but no resonating gourd or skin. The bridge is made from a machined synthetic material with an integral piezo-electric sensor. There are two handles located in elevation near the middle of the bridge. The bridge is curved to follow the arc of a strum from the hands which hold the shortened raised handles directly in the palms. A metal crossbar at the top of the bridge functions as a mech ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravi-kora 2 (Photo Jacques Burtin)
The Gravikord is a 24 string electric double bridge-harp invented by Robert Grawi in 1984, which is closely related to both the West African Kora (instrument), kora and the mbira. It was designed to employ a separated double tonal array structure making it possible to easily play cross-beat, cross-rhythms in a polyrhythmic musical style in a modern electro-acoustic instrument. The Gravi-kora is a similar instrument, also developed by Grawi, which is tuned identically to a traditional 21 string kora. Description The Gravikord is based on the West African kora. It is made of welded stainless steel tubing, with 24 nylon strings but no resonating gourd or skin. The bridge (instrument), bridge is made from a machined synthetic material with an integral Pickup (music technology), piezo-electric sensor. There are two handles located in elevation near the middle of the bridge. The bridge is curved to follow the arc of a strum from the hands which hold the shortened raised handles directly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyrhythm
Polyrhythm () is the simultaneous use of two or more rhythms that are not readily perceived as deriving from one another, or as simple manifestations of the same meter. The rhythmic layers may be the basis of an entire piece of music (cross-rhythm), or a momentary section. Polyrhythms can be distinguished from irrational rhythms, which can occur within the context of a single Part (music), part; polyrhythms require at least two rhythms to be played concurrently, one of which is typically an irrational rhythm. Concurrently in this context means within the same rhythmic cycle. The underlying pulse, whether explicit or implicit can be considered one of the concurrent rhythms. For example, the Clave (rhythm)#Son clave, son clave is poly-rhythmic because its 3 section suggests a different meter from the pulse of the entire pattern. In western art music In some European art music, polyrhythm periodically contradicts the prevailing meter. For example, in Wolfgang Amadeus Mozart, Moz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harp
The harp is a stringed musical instrument that has individual strings running at an angle to its soundboard; the strings are plucked with the fingers. Harps can be made and played in various ways, standing or sitting, and in orchestras or concerts. Its most common form is triangular in shape and made of wood. Some have multiple rows of strings and pedal attachments. Ancient depictions of harps were recorded in Mesopotamia (now Iraq), Persia (now Iran) and Egypt, and later in India and China. By medieval times harps had spread across Europe. Harps were found across the Americas where it was a popular folk tradition in some areas. Distinct designs also emerged from the African continent. Harps have symbolic political traditions and are often used in logos, including in Ireland. Historically, strings were made of sinew (animal tendons). Other materials have included gut (animal intestines), plant fiber, braided hemp, cotton cord, silk, nylon, and wire. In pedal harp scor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mbira
Mbira ( ; ) are a family of musical instruments, traditional to the Shona people of Zimbabwe. They consist of a wooden board (often fitted with a resonator) with attached staggered metal Tine (structural), tines, played by holding the instrument in the hands and plucking the tines with the thumbs (at minimum), the right Index finger, forefinger (most mbira), and sometimes the left Index finger, forefinger. Musicology, Musicologists classify it as a lamellaphone, part of the plucked idiophone family of musical instruments. In Eastern and Southern Africa, there are many kinds of mbira, often accompanied by the hosho (instrument), hosho, a percussion instrument. It is often an important instrument played at religious ceremonies, weddings, and other social gatherings. The "Art of crafting and playing Mbira/Sansi, the finger-plucking traditional musical instrument in Malawi and Zimbabwe" was added to the UNESCO Intangible Cultural Heritage Lists#Representative list of the Intangible Cu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hugh Tracey
Hugh Travers Tracey was an English ethnomusicologist. He and his wife collected and archived music from Southern and Central Africa. From the 1920s through the 1970s, Tracey made over 35,000 recordings of African folk music. He popularized the mbira (a musical instrument of the Shona people) internationally under the name ''kalimba''. Hugh Tracey saw the importance of music within culture when he worked a tobacco farm in Southern Rhodesia. Here, he experienced music that displayed beliefs and morals, which inspired him to make his field recordings. He wanted to stop the loss of traditional music and culture from modernity and recorded all of his field recordings from rural areas that still held onto traditional culture and ideas. Life and career Tracey was born in Willand, Devon, in 1903. In the late 1920s Tracey was a farmer in rural Devon, when he decided to travel to Southern Rhodesia, current Zimbabwe. There he continued to work as a farmer, but became deeply interested ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Africa
West Africa, also known as Western Africa, is the westernmost region of Africa. The United Nations geoscheme for Africa#Western Africa, United Nations defines Western Africa as the 16 countries of Benin, Burkina Faso, Cape Verde, The Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Mali, Mauritania, Niger, Nigeria, Senegal, Sierra Leone, and Togo, as well as Saint Helena, Ascension and Tristan da Cunha (United Kingdom Overseas Territories, United Kingdom Overseas Territory).Paul R. Masson, Catherine Anne Pattillo, "Monetary union in West Africa (ECOWAS): is it desirable and how could it be achieved?" (Introduction). International Monetary Fund, 2001. The population of West Africa is estimated at around million people as of , and at 381,981,000 as of 2017, of which 189,672,000 were female and 192,309,000 male.United Nations Department of Economic and Social Affairs, Population Division (2017). World Population Prospects: The 2017 Revision, custom data acquired via webs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mbira
Mbira ( ; ) are a family of musical instruments, traditional to the Shona people of Zimbabwe. They consist of a wooden board (often fitted with a resonator) with attached staggered metal Tine (structural), tines, played by holding the instrument in the hands and plucking the tines with the thumbs (at minimum), the right Index finger, forefinger (most mbira), and sometimes the left Index finger, forefinger. Musicology, Musicologists classify it as a lamellaphone, part of the plucked idiophone family of musical instruments. In Eastern and Southern Africa, there are many kinds of mbira, often accompanied by the hosho (instrument), hosho, a percussion instrument. It is often an important instrument played at religious ceremonies, weddings, and other social gatherings. The "Art of crafting and playing Mbira/Sansi, the finger-plucking traditional musical instrument in Malawi and Zimbabwe" was added to the UNESCO Intangible Cultural Heritage Lists#Representative list of the Intangible Cu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diatonic Scale
In music theory a diatonic scale is a heptatonic scale, heptatonic (seven-note) scale that includes five whole steps (whole tones) and two half steps (semitones) in each octave, in which the two half steps are separated from each other by either two or three whole steps. In other words, the half steps are maximally separated from each other. The seven pitch (music), pitches of any diatonic scale can also be obtained by using a Interval cycle, chain of six perfect fifths. For instance, the seven natural (music), natural pitch classes that form the C-major scale can be obtained from a stack of perfect fifths starting from F: :F–C–G–D–A–E–B. Any sequence of seven successive natural notes, such as C–D–E–F–G–A–B, and any Transposition (music), transposition thereof, is a diatonic scale. Modern musical keyboards are designed so that the white-key notes form a diatonic scale, though transpositions of this diatonic scale require one or more black keys. A diaton ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
