String instrument rosin than players of lower-pitched instruments, who tend to favor darker, softer rosin. The ravanahatha is one of the oldest string instruments. Ancestors of the modern bowed string instruments are the rebab of the Islamic Empires, the Persian kamanche and the Byzantine lira. Other bowed instruments are the rebec, hardingfele, nyckelharpa, kokyū, erhu, igil, sarangi and K'ni. The hurdy-gurdy is bowed by a wheel. Rarely, the guitar has been played with a bow (rather than plucked) for unique effects. The third common method of sound production in stringed instruments is to strike the string. The piano and hammered dulcimer use
Early Music (Lachrymæ Antiquæ) album in which "the distinctions between old and new are blurred, and the effect is comforting rather than disconcerting." As with many Kronos Quartet albums, the basic string quartet is augmented by various other, sometimes exotic instruments. The Swedish song "Längdans efter Byfåns Mats" features a bagpipe, and the traditional Swedish bridal march "Brudmarsch frå Östa" includes a nyckelharpa (a string instrument related to the hurdy-gurdy). Chinese virtuoso musician Wu Man plays two kinds of ruan (a plucked lute-like string instrument) on "Lachrymæ Antiquæ." Perhaps the most exotic instrumentation is found on "Uleg-Khem", a traditional Tuvan song, where the quartet