Individual songs may not have been written down immediately when first composed, and the author may be lost to time, making for many versions of long-loved tunes. Composers such as Percy Grainger, Zoltan Kodaly, and Bela Bartok were avid collectors of folk songs. Instruments commonly used in the genre include accordions, banjos, and harmonicas. It is often sung and played by musicians who may or may not be trained professionally. Folk music comprises traditional songs that have been handed down from generation to generation and represents a country's heritage.
