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
Music of Sweden fiddle with two sympathetic strings, similar to the Norwegian Hardanger fiddle The nyckelharpa (keyed fiddle) is similar to both a fiddle and a hurdy-gurdy, and is known from Sweden since at least 1350, when it was carved on a gate in a church in Gotland. During the 15th and 16th centuries, the nyckelharpa was known throughout Sweden, Denmark and particularly in the province of Uppland. The latter has long been a stronghold for nyckelharpa music, including through the 60s revival, which drew on musicians like Byss-Calle from Älvkarleby. The instrument played at this time was not the same as that