Gravikord

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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 instrument. The Gravi-kora is a similar instrument, also developed by Grawi, which is tuned identically to a traditional 21 string kora.