also: フォーク・ソング
Refers to traditional or contemporary folk music, often with acoustic instruments and storytelling lyrics. In Japanese contexts, it can also refer to Western-style folk music popularized in the 1960s and 1970s.
He sang and played a folk song on the guitar.
Japanese folk music was popular in the 1970s.
He sang a folk song while playing the guitar.
In the 1970s, folk songs became hugely popular in Japan.