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 Switzerland of folk music was the Swiss song Kühreihen, an agricultural Alpine song in the Lydian mode. Traditional instruments included alphorn, hammered dulcimer, fife, hurdy-gurdy, castanets, rebec, bagpipe, cittern and shawm. At the beginning of the 19th century, Swiss folk music was largely performed by ensembles made of itinerant musicians and solo acts using an instrument, with only a few duos. In the 1830s, however, the Swiss military was reorganized, leading to the formation of brass bands that used modern instruments. These instruments, mostly brass or wind, were built much better than those played by itinerants, and musicians brought them back