<human>:  What are some of the important differences between folk music and classical music?
<bot>: One of the main differences between folk music and classical music is the way the music is composed. Folk music is usually composed by the musicians themselves, either spontaneously or with improvised melodies and rhythms, while classical music is composed by a composer and involves more complex musical structures. Folk music also often relies heavily on lyrics, while classical music often focuses more on the instrumentation and arrangement of the music. Additionally, classical music is often more structured to sound as an exact interpretation of the composer's score, while folk music is usually subject to more variability between performances.