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Struck chordophones - a group of stringed instruments in which the sound source is a strung string. The string can be struck: manually (e.g. dulcimer) with a tangent (e.g. clavichord) with a hammer (e.g. piano) == Bibliography == Mieczysław Drobner: Instruments and acoustics. Krakow: Polskie Wydawnictwo Muzyczne, 1997, p. 35.